| 1991 | An Object Calculus for Asynchronous Communication. Kohei Honda, Mario Tokoro |
| 1991 | An Object-Oriented Logic Language for Modular System Specification. Angelo Morzenti, Pierluigi San Pietro |
| 1991 | Capsules and Types in Fresco: Program Verification in Smalltalk. Alan Wills |
| 1991 | Definition of Reusable Concurrent Software Components. Stefano Crespi-Reghizzi, Guido Galli de Paratesi, Stefano Genolini |
| 1991 | ECOOP'91 European Conference on Object-Oriented Programming, Geneva, Switzerland, July 15-19, 1991, Proceedings Pierre America |
| 1991 | Exceptions in Guide, an Object-Oriented Language for Distributed Applications. Serge Lacourte |
| 1991 | Hybrid Group Reflective Architecture for Object-Oriented Concurrent Reflective Programming. Satoshi Matsuoka, Takuo Watanabe, Akinori Yonezawa |
| 1991 | Implementation Techniques for Integral Version Management. Ernst Lippe, Gert Florijn |
| 1991 | Implementational Reflection in Silica. Ramana Rao |
| 1991 | Incremental Class Dictionary Learning and Optimization. Paul L. Bergstein, Karl J. Lieberherr |
| 1991 | Inheritance in Object-Oriented Z. Elspeth Cusack |
| 1991 | Issues in the Design and Implementation of a Schema Designer for an OODBMS. Jay Almarode |
| 1991 | Modeling the C++ Object Model, An Application of an Abstract Object Model. Alan Snyder |
| 1991 | Multi-Methods in a Statically-Typed Programming Language. Warwick B. Mugridge, John Hamer, John G. Hosking |
| 1991 | OOZE: An Object Oriented Z Environment. Antonio J. Alencar, Joseph A. Goguen |
| 1991 | Object Integrity Using Rules. Claudia Bauzer Medeiros, Patrick Pfeffer |
| 1991 | Object-Oriented Analysis and Top-Down Software Development. Dennis de Champeaux |
| 1991 | Optimizing Dynamically-Typed Object-Oriented Languages With Polymorphic Inline Caches. Urs Hölzle, Craig Chambers, David M. Ungar |
| 1991 | Representation of Complex Objects: Multiple Facets with Part-Whole Hierarchies. Francis Wolinski, Jean-François Perrot |
| 1991 | Schema Modifications in the LISPO Gilles Barbedette |
| 1991 | Synchronizing Actions. Christian Neusius |
| 1991 | The Design of an Integrity Consistency Checker (ICC) for an Object-Oriented Database System. Christine Delcourt, Roberto V. Zicari |
| 1991 | What is Type-Safe Code Reuse? Jens Palsberg, Michael I. Schwartzbach |