Daniel Liberzon

158 papers C 3Journal 75Unranked 78
YearRankTypeTitle / Venue / Authors
2026 J jnl
Active Localization of Unstable Systems with Coarse Information.
CoRR
Ege Yuceel, Daniel Liberzon, Sayan Mitra
2025 — conf
Indistinguishability in Localization and Control with Coarse Information.
HSCC
Daniel Liberzon, Sayan Mitra
2025 — conf
Robust signal decompositions on the circle.
CDC
Aral Kose, Daniel Liberzon
2025 J jnl
Robust signal decompositions on the circle.
CoRR
Aral Kose, Daniel Liberzon
2025 J jnl
Topological Entropy of Nonlinear Time-Varying Systems.
CoRR
Guosong Yang, Daniel Liberzon
2024 — conf
Further results on stability of linear systems with slow and fast time variation and switching.
HSCC
Hyungbo Shim, Daniel Liberzon
2024 — conf
Stability of nonlinear systems with slow and fast time variation and switching: the common equilibrium case.
CDC
Daniel Liberzon, Hyungbo Shim
2023 — conf
Controllability with a Finite Data-Rate of Switched Linear Systems.
CDC
Guilherme Scabin Vicinansa, Daniel Liberzon
2023 J jnl
Estimation Entropy, Lyapunov Exponents, and Quantizer Design for Switched Linear Systems.
SIAM J. Control. Optim.
Guilherme Scabin Vicinansa, Daniel Liberzon
2023 J jnl
Topological entropy of switched nonlinear and interconnected systems.
CoRR
Guosong Yang, Daniel Liberzon, João P. Hespanha
2023 J jnl
Topological entropy of switched nonlinear and interconnected systems.
Math. Control. Signals Syst.
Guosong Yang, Daniel Liberzon, João P. Hespanha
2022 — conf
Controllability of Linear Time-Varying Systems with Quantized Controls and Finite Data-Rate.
CDC
Guilherme Scabin Vicinansa, Daniel Liberzon
2022 J jnl
ISS and integral-ISS of switched systems with nonlinear supply functions.
Math. Control. Signals Syst.
Shenyu Liu, Aneel Tanwani, Daniel Liberzon
2022 J jnl
Integral-Input-to-State Stability of Switched Nonlinear Systems Under Slow Switching.
IEEE Trans. Autom. Control.
Shenyu Liu, Antonio Russo, Daniel Liberzon, Alberto Cavallo
2022 — conf
Stability of linear systems with slow and fast time variation and switching.
CDC
Daniel Liberzon, Hyungbo Shim
2021 J jnl
On Topological Entropy of Interconnected Nonlinear Systems.
IEEE Control. Syst. Lett.
Daniel Liberzon
2021 — conf
Quantizer design for switched linear systems with minimal data-rate.
HSCC
Guilherme Scabin Vicinansa, Daniel Liberzon
2021 J jnl
Robust leader-follower synchronization of electric power generators.
Syst. Control. Lett.
Olaoluwapo Ajala, Alejandro D. Domínguez-García, Daniel Liberzon
2021 — conf
Topological entropy of switched nonlinear systems.
HSCC
Guosong Yang, Daniel Liberzon, João P. Hespanha
2020 J jnl
Almost Lyapunov functions for nonlinear systems.
Autom.
Shenyu Liu, Daniel Liberzon, Vadim Zharnitsky
2020 — conf
Average Dwell-Time Bounds for ISS and Integral ISS of Switched Systems using Lyapunov Functions.
CDC
Shenyu Liu, Aneel Tanwani, Daniel Liberzon
2020 J jnl
Special issue dedicated to Prof. Alexander L. Fradkov.
Int. J. Control
Emilia Fridman, Daniel Liberzon, Pavel V. Pakshin, Anton V. Proskurnikov
2020 J jnl
Topological entropy of switched linear systems: general matrices and matrices with commutation relations.
Math. Control. Signals Syst.
Guosong Yang, A. James Schmidt, Daniel Liberzon, João P. Hespanha
2019 — conf
Estimation Entropy for Regular Linear Switched Systems.
CDC
Guilherme Scabin Vicinansa, Daniel Liberzon
2019 — conf
Higher Order Derivatives of Lyapunov Functions for Stability of Systems with Inputs.
CDC
Shenyu Liu, Daniel Liberzon
2019 — conf
On Almost Lyapunov Functions for Systems with Inputs.
CDC
Shenyu Liu, Daniel Liberzon
2019 — conf
On topological entropy and stability of switched linear systems.
HSCC
Guosong Yang, João P. Hespanha, Daniel Liberzon
2019 J jnl
Robust synchronization of electric power generators.
CoRR
Olaoluwapo Ajala, Alejandro D. Domínguez-García, Daniel Liberzon
2018 J jnl
A library of second-order models for synchronous machines.
CoRR
Olaoluwapo Ajala, Alejandro D. Domínguez-García, Peter W. Sauer, Daniel Liberzon
2018 — conf
An Approach to Robust Synchronization of Electric Power Generators.
CDC
Olaoluwapo Ajala, Alejandro D. Domínguez-García, Daniel Liberzon
2018 J jnl
Entropy and Minimal Bit Rates for State Estimation and Model Detection.
IEEE Trans. Autom. Control.
Daniel Liberzon, Sayan Mitra
2018 J jnl
Feedback Stabilization of Switched Linear Systems With Unknown Disturbances Under Data-Rate Constraints.
IEEE Trans. Autom. Control.
Guosong Yang, Daniel Liberzon
2018 — conf
Global Stability and Asymptotic Gain Imply Input-to-State Stability for State-Dependent Switched Systems.
CDC
Shenyu Liu, Daniel Liberzon
2018 J jnl
Lyapunov small-gain theorems for networks of not necessarily ISS hybrid systems.
Autom.
Andrii Mironchenko, Guosong Yang, Daniel Liberzon
2018 — conf
On Stability of Nonlinear Slowly Time-Varying and Switched Systems.
CDC
Xiaobin Gao, Daniel Liberzon, Tamer Basar
2018 — conf
On Topological Entropy of Switched Linear Systems with Diagonal, Triangular, and General Matrices.
CDC
Guosong Yang, A. James Schmidt, Daniel Liberzon
2018 J jnl
Robustness of Pecora-Carroll synchronization under communication constraints.
Syst. Control. Lett.
Boris R. Andrievsky, Alexander L. Fradkov, Daniel Liberzon
2018 J jnl
Unified stability criteria for slowly time-varying and switched linear systems.
Autom.
Xiaobin Gao, Daniel Liberzon, Ji Liu, Tamer Basar
2017 J jnl
Control With Minimal Cost-Per-Symbol Encoding and Quasi-Optimality of Event-Based Encoders.
IEEE Trans. Autom. Control.
Justin Pearson, João Pedro Hespanha, Daniel Liberzon
2017 — conf
Robust observers and Pecora-Carroll synchronization with limited information.
CDC
Boris R. Andrievsky, Alexander L. Fradkov, Daniel Liberzon
2017 C conf
Stabilization of interconnected switched control-affine systems via a Lyapunov-based small-gain approach.
ACC
Guosong Yang, Daniel Liberzon, Zhong-Ping Jiang
2016 J jnl
Adaptive control of passifiable linear systems with quantized measurements and bounded disturbances.
Syst. Control. Lett.
Anton Selivanov, Alexander L. Fradkov, Daniel Liberzon
2016 J jnl
Analysis and Design of Networked Control Systems, K. You, N. Xiao, L. Xie. Springer, London (2015).
Autom.
Daniel Liberzon
2016 — conf
Analysis of different Lyapunov function constructions for interconnected hybrid systems.
CDC
Guosong Yang, Daniel Liberzon, Andrii Mironchenko
2016 J jnl
Energy control of a pendulum with quantized feedback.
Autom.
Ruslan E. Seifullaev, Alexander L. Fradkov, Daniel Liberzon
2016 — conf
Entropy and Minimal Data Rates for State Estimation and Model Detection.
HSCC
Daniel Liberzon, Sayan Mitra
2016 — conf
Entropy notions for state estimation and model detection with finite-data-rate measurements.
CDC
Daniel Liberzon, Sayan Mitra
2016 J jnl
Generalized switching signals for input-to-state stability of switched systems.
Autom.
Atreyee Kundu, Debasish Chatterjee, Daniel Liberzon
2016 J jnl
Nonlinear Observers Robust to Measurement Disturbances in an ISS Sense.
IEEE Trans. Autom. Control.
Hyungbo Shim, Daniel Liberzon
2016 — conf
On almost Lyapunov functions for non-vanishing vector fields.
CDC
Shenyu Liu, Daniel Liberzon, Vadim Zharnitsky
2015 J jnl
A Lyapunov-based small-gain theorem for interconnected switched systems.
Syst. Control. Lett.
Guosong Yang, Daniel Liberzon
2015 J jnl
An Asymptotic Ratio Characterization of Input-to-State Stability.
IEEE Trans. Autom. Control.
Daniel Liberzon, Hyungbo Shim
2015 J jnl
Comments on "Observability of Switched Linear Systems: Characterization and Observer Design".
IEEE Trans. Autom. Control.
Aneel Tanwani, Hyungbo Shim, Daniel Liberzon
2015 J jnl
Compensation of disturbances for MIMO systems with quantized output.
Autom.
Igor B. Furtat, Alexander L. Fradkov, Daniel Liberzon
2015 — conf
Connections between stability conditions for slowly time-varying and switched linear systems.
CDC
Xiaobin Gao, Daniel Liberzon, Ji Liu, Tamer Basar
2015 J jnl
Generalized switching signals for input-to-state stability of switched systems.
CoRR
Atreyee Kundu, Debasish Chatterjee, Daniel Liberzon
2015 J jnl
Norm-Controllability of Nonlinear Systems.
IEEE Trans. Autom. Control.
Matthias Albrecht Müller, Daniel Liberzon, Frank Allgöwer
2015 — conf
Quasi-optimality of event-based encoders.
CDC
Justin Pearson, João Pedro Hespanha, Daniel Liberzon
2015 C conf
Stabilizing a switched linear system with disturbance by sampled-data quantized feedback.
ACC
Guosong Yang, Daniel Liberzon
2014 — conf
Control with minimum communication cost per symbol.
CDC
Justin Pearson, João Pedro Hespanha, Daniel Liberzon
2014 — conf
Cyclic pursuit without coordinates: Convergence to regular polygon formations.
CDC
Maxim Arnold, Yuliy M. Baryshnikov, Daniel Liberzon
2014 — conf
Distributed linear supervisory control.
CDC
Ali Khanafer, Tamer Basar, Daniel Liberzon
2014 J jnl
Finite data-rate feedback stabilization of switched and hybrid linear systems.
Autom.
Daniel Liberzon
2014 — conf
Input-to-state stability for switched systems with unstable subsystems: A hybrid Lyapunov construction.
CDC
Guosong Yang, Daniel Liberzon
2014 J jnl
Lyapunov-Based Small-Gain Theorems for Hybrid Systems.
IEEE Trans. Autom. Control.
Daniel Liberzon, Dragan Nesic, Andrew R. Teel
2014 — conf
On almost Lyapunov functions.
CDC
Daniel Liberzon, Charles Ying, Vadim Zharnitsky
2013 — conf
Limited-information control of hybrid systems via reachable set propagation.
HSCC
Daniel Liberzon
2013 — conf
Norm-Controllability, or How a Nonlinear System Responds to Large Inputs.
NOLCOS
Matthias Albrecht Müller, Daniel Liberzon, Frank Allgöwer
2013 J jnl
Observability for Switched Linear Systems: Characterization and Observer Design.
IEEE Trans. Autom. Control.
Aneel Tanwani, Hyungbo Shim, Daniel Liberzon
2013 — conf
Robust stability conditions for switched linear systems: Commutator bounds and the Łojasiewicz inequality.
CDC
Yuliy M. Baryshnikov, Daniel Liberzon
2013 J jnl
The Bang-Bang Funnel Controller for Uncertain Nonlinear Systems With Arbitrary Relative Degree.
IEEE Trans. Autom. Control.
Daniel Liberzon, Stephan Trenn
2013 — conf
The bang-bang funnel controller: time delays and case study.
ECC
Daniel Liberzon, Stephan Trenn
2012 J jnl
Input to State Stabilizing Controller for Systems With Coarse Quantization.
IEEE Trans. Autom. Control.
Yoav Sharon, Daniel Liberzon
2012 J jnl
Input/output-to-state stability and state-norm estimators for switched nonlinear systems.
Autom.
Matthias Albrecht Müller, Daniel Liberzon
2012 J jnl
On robust Lie-algebraic stability conditions for switched linear systems.
Syst. Control. Lett.
Andrei A. Agrachev, Yuliy M. Baryshnikov, Daniel Liberzon
2012 — conf
Relaxed conditions for norm-controllability of nonlinear systems.
CDC
Matthias Albrecht Müller, Daniel Liberzon, Frank Allgöwer
2012 J jnl
Rendezvous Without Coordinates.
IEEE Trans. Autom. Control.
Jingjin Yu, Steven M. LaValle, Daniel Liberzon
2012 — conf
Small-gain theorems of LaSalle type for hybrid systems.
CDC
Daniel Liberzon, Dragan Nesic, Andrew R. Teel
2012 J jnl
Switched nonlinear differential algebraic equations: Solution theory, Lyapunov functions, and stability.
Autom.
Daniel Liberzon, Stephan Trenn
2011 J jnl
An Inversion-Based Approach to Fault Detection and Isolation in Switching Electrical Networks.
IEEE Trans. Control. Syst. Technol.
Aneel Tanwani, Alejandro D. Domínguez-García, Daniel Liberzon
2011 — conf
Commutativity and asymptotic stability for linear switched DAEs.
CDC/ECC
Daniel Liberzon, Stephan Trenn, Fabian Wirth
2011 — conf
Observability implies observer design for switched linear systems.
HSCC
Aneel Tanwani, Hyungbo Shim, Daniel Liberzon
2011 — conf
On norm-controllability of nonlinear systems.
CDC/ECC
Matthias Albrecht Müller, Daniel Liberzon, Frank Allgöwer
2011 — conf
Robust invertibility of switched linear systems.
CDC/ECC
Aneel Tanwani, Daniel Liberzon
2011 J jnl
Stabilizing Randomly Switched Systems.
SIAM J. Control. Optim.
Debasish Chatterjee, Daniel Liberzon
2011 — conf
Stabilizing a switched linear system by sampled-data quantized feedback.
CDC/ECC
Daniel Liberzon
2011 J jnl
Supervisory Control of Uncertain Linear Time-Varying Systems.
IEEE Trans. Autom. Control.
Linh Vu, Daniel Liberzon
2010 — conf
Adaptive control using quantized measurements with application to vision-only landing control.
CDC
Yoav Sharon, Daniel Liberzon, Yi Ma
2010 C conf
Input/output-to-state stability of switched nonlinear systems.
ACC
Matthias A. Müller, Daniel Liberzon
2010 J jnl
Invertibility of switched nonlinear systems.
Autom.
Aneel Tanwani, Daniel Liberzon
2010 — conf
State-norm estimators for switched nonlinear systems under average dwell-time.
CDC
Matthias Albrecht Müller, Daniel Liberzon
2010 — conf
The bang-bang funnel controller.
CDC
Daniel Liberzon, Stephan Trenn
2010 — conf
Towards robust Lie-algebraic stability conditions for switched linear systems.
CDC
Andrei A. Agrachev, Yuliy M. Baryshnikov, Daniel Liberzon
2009 J jnl
A Unified Framework for Design and Analysis of Networked and Quantized Control Systems.
IEEE Trans. Autom. Control.
Dragan Nesic, Daniel Liberzon
2009 J jnl
Nonlinear Control with Limited Information.
Commun. Inf. Syst.
Daniel Liberzon
2009 — conf
On new sufficient conditions for stability of switched linear systems.
ECC
Daniel Liberzon
2009 — conf
On stability of linear switched differential algebraic equations.
CDC
Daniel Liberzon, Stephan Trenn
2009 — conf
Quasi-ISS reduced-order observers and quantized output feedback.
CDC
Hyungbo Shim, Daniel Liberzon, Jung-Su Kim
2008 — conf
Input-to-State Stabilization with Quantized Output Feedback.
HSCC
Yoav Sharon, Daniel Liberzon
2008 — conf
Invertibility of nonlinear switched systems.
CDC
Aneel Tanwani, Daniel Liberzon
2008 J jnl
Invertibility of switched linear systems.
Autom.
Linh Vu, Daniel Liberzon
2008 J jnl
Lyapunov conditions for input-to-state stability of impulsive systems.
Autom.
João Pedro Hespanha, Daniel Liberzon, Andrew R. Teel
2008 — conf
Rendezvous without coordinates.
CDC
Jingjin Yu, Steven M. LaValle, Daniel Liberzon
2008 — conf
Stabilizing uncertain systems with dynamic quantization.
CDC
Linh Vu, Daniel Liberzon
2008 J jnl
Verifying average dwell time of hybrid systems.
ACM Trans. Embed. Comput. Syst.
Sayan Mitra, Daniel Liberzon, Nancy A. Lynch
2007 — conf
A unified approach to controller design for systems with quantization and time scheduling.
CDC
Dragan Nesic, Daniel Liberzon
2007 J jnl
Input-to-State Stabilization of Linear Systems With Quantized State Measurements.
IEEE Trans. Autom. Control.
Daniel Liberzon, Dragan Nesic
2007 J jnl
Input-to-state stability of switched systems and switching adaptive control.
Autom.
Linh Vu, Debasish Chatterjee, Daniel Liberzon
2007 — conf
Input-to-state stabilization with minimum number of quantization regions.
CDC
Yoav Sharon, Daniel Liberzon
2007 J jnl
On Stability of Randomly Switched Nonlinear Systems.
IEEE Trans. Autom. Control.
Debasish Chatterjee, Daniel Liberzon
2007 — conf
Stability of interconnected switched systems and supervisory control of time-varying plants.
CDC
Linh Vu, Daniel Liberzon
2007 — conf
Towards ISS disturbance attenuation for randomly switched systems.
CDC
Debasish Chatterjee, Daniel Liberzon
2006 J jnl
Lie-algebraic stability conditions for nonlinear switched systems and differential inclusions.
Syst. Control. Lett.
Michael Margaliot, Daniel Liberzon
2006 — conf
On Invertibility of Switched Linear Systems.
CDC
Linh Vu, Daniel Liberzon
2006 J jnl
Quantization, time delays, and nonlinear stabilization.
IEEE Trans. Autom. Control.
Daniel Liberzon
2006 J jnl
Quantized control via locational optimization.
IEEE Trans. Autom. Control.
Francesco Bullo, Daniel Liberzon
2006 — conf
Stability Analysis and Stabilization of Randomly Switched Systems.
CDC
Debasish Chatterjee, Daniel Liberzon
2006 — conf
Stability Analysis of Hybrid Systems Via Small-Gain Theorems.
HSCC
Daniel Liberzon, Dragan Nesic
2006 J jnl
Stability analysis of deterministic and stochastic switched systems via a comparison principle and multiple Lyapunov functions.
SIAM J. Control. Optim.
Debasish Chatterjee, Daniel Liberzon
2006 — conf
Verifying Average Dwell Time by Solving Optimization Problems.
HSCC
Sayan Mitra, Nancy A. Lynch, Daniel Liberzon
2005 — conf
A small-gain approach to stability analysis of hybrid systems.
CDC/ECC
Dragan Nesic, Daniel Liberzon
2005 J jnl
Common Lyapunov functions for families of commuting nonlinear systems.
Syst. Control. Lett.
Linh Vu, Daniel Liberzon
2005 — conf
ISS of Switched Systems and Applications to Switching Adaptive Control.
CDC/ECC
Linh Vu, Debasish Chatterjee, Daniel Liberzon
2005 — conf
Input-to-state stabilization of linear systems with quantized feedback.
CDC/ECC
Daniel Liberzon, Dragan Nesic
2005 J jnl
Liapunov functions and stability in control theory, second ed., : A. Bacciotti, L. Rosier; Springer, Berlin, 2005, ISBN: 3-540-21332-5.
Autom.
Daniel Liberzon
2005 J jnl
Nonlinear norm-observability notions and stability of switched systems.
IEEE Trans. Autom. Control.
João P. Hespanha, Daniel Liberzon, David Angeli, Eduardo D. Sontag
2005 — conf
On Input-to-State Stability of Impulsive Systems.
CDC/ECC
João P. Hespanha, Daniel Liberzon, Andrew R. Teel
2005 J jnl
Stabilization of nonlinear systems with limited information feedback.
IEEE Trans. Autom. Control.
Daniel Liberzon, João P. Hespanha
2005 — ch.
Switched Systems.
Handbook of Networked and Embedded Control Systems
Daniel Liberzon
2004 — conf
A Lie-algebraic condition for stability of switched nonlinear systems.
CDC
Michael Margaliot, Daniel Liberzon
2004 J jnl
Common Lyapunov functions and gradient algorithms.
IEEE Trans. Autom. Control.
Daniel Liberzon, Roberto Tempo
2004 — conf
On stability of stochastic switched systems.
CDC
Debasish Chatterjee, Daniel Liberzon
2004 J jnl
Output-input stability implies feedback stabilization.
Syst. Control. Lett.
Daniel Liberzon
2004 — conf
Stability of hybrid automata with average dwell time: an invariant approach.
CDC
Sayan Mitra, Daniel Liberzon
2003 — conf
Gradient algorithms for finding common Lyapunov functions.
CDC
Daniel Liberzon, Roberto Tempo
2003 J jnl
Hybrid feedback stabilization of systems with quantized signals.
Autom.
Daniel Liberzon
2003 J jnl
Hysteresis-based switching algorithms for supervisory control of uncertain systems.
Autom.
João P. Hespanha, Daniel Liberzon, A. Stephen Morse
2003 — conf
On quantized control and geometric optimization.
CDC
Francesco Bullo, Daniel Liberzon
2003 J jnl
On stabilization of linear systems with limited information.
IEEE Trans. Autom. Control.
Daniel Liberzon
2003 — conf
Output-input stability and feedback stabilization of multivariable nonlinear control systems.
CDC
Daniel Liberzon
2003 J jnl
Overcoming the limitations of adaptive control by means of logic-based switching.
Syst. Control. Lett.
João P. Hespanha, Daniel Liberzon, A. Stephen Morse
2003 J jnl
Qualitative theory of hybrid dynamical systems: A.S. Matveev and A.V. Savkin; Birkhäuser, Boston, 2000, ISBN: 0-8176-4141-6.
Autom.
Daniel Liberzon
2003 — conf
Stabilizing a nonlinear system with limited information feedback.
CDC
Daniel Liberzon
2003 — book
Switching in Systems and Control
Daniel Liberzon
2002 — conf
A note on stabilization of linear systems using coding and limited communication.
CDC
Daniel Liberzon
2002 — conf
Nonlinear observability and an invariance principle for switched systems.
CDC
João P. Hespanha, Daniel Liberzon, Eduardo D. Sontag
2002 J jnl
Output-input stability and minimum-phase nonlinear systems.
IEEE Trans. Autom. Control.
Daniel Liberzon, A. Stephen Morse, Eduardo D. Sontag
2002 J jnl
Supervision of integral-input-to-state stabilizing controllers.
Autom.
João P. Hespanha, Daniel Liberzon, A. Stephen Morse
2002 J jnl
Universal construction of feedback laws achieving ISS and integral-ISS disturbance attenuation.
Syst. Control. Lett.
Daniel Liberzon, Eduardo D. Sontag, Yuan Wang
2001 — conf
A hybrid control framework for systems with quantization.
CDC
Daniel Liberzon
2001 J jnl
Lie-Algebraic Stability Criteria for Switched Systems.
SIAM J. Control. Optim.
Andrei A. Agrachev, Daniel Liberzon
2000 — conf
A new definition of the minimum-phase property for nonlinear systems, with an application to adaptive control.
CDC
Daniel Liberzon, A. Stephen Morse, Eduardo D. Sontag
2000 — conf
Bounds on the number of switchings with scale-independent hysteresis: applications to supervisory control.
CDC
João P. Hespanha, Daniel Liberzon, A. Stephen Morse
2000 — conf
Hierarchical hysteresis switching.
CDC
Daniel Liberzon, João P. Hespanha, A. Stephen Morse
2000 — conf
Nonlinear Stabilization by Hybrid Quantized Feedback.
HSCC
Daniel Liberzon
2000 J jnl
Nonlinear feedback systems perturbed by noise: steady-state probability distributions and optimal control.
IEEE Trans. Autom. Control.
Daniel Liberzon, Roger W. Brockett
2000 J jnl
Quantized feedback stabilization of linear systems.
IEEE Trans. Autom. Control.
Roger W. Brockett, Daniel Liberzon
2000 J jnl
Spectral Analysis of Fokker--Planck and Related Operators Arising From Linear Stochastic Differential Equations.
SIAM J. Control. Optim.
Daniel Liberzon, Roger W. Brockett