John Backus The Algebra of Functional Programs: Function Level Reasoning, Linear Equations, and Extended Definitions. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:1-43 [Conf]
José Meseguer A Birkhoff-Like Theorem for Algebraic Classes of Interpretations of Program Schemes. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:152-168 [Conf]
Jack B. Dennis An Operational Semantics for a Language with Early Completion Data Structures. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:260-267 [Conf]
Ryszard Janicki A Construction of Concurrent Systems by Means of Sequential Solutions and Concurrency Relations. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:327-334 [Conf]
Luis Mejia A Proposal for Operational Semantics and Equivalence of Finite Asynchronous Processes. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:387-400 [Conf]
Luís Monteiro An Extension to Horn Clause Logic Allowing the Definition of Concurrent Processes. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:401-407 [Conf]
Axel Poigné Using Last Fixed Points to Characterize Formal Computations of Non-Deterministic Equations. [Citation Graph (0, 0)][DBLP] ICFPC, 1981, pp:447-459 [Conf]