Hartmut Ehrig, Christiane Floyd, Maurice Nivat, James W. Thatcher (Eds.):
Mathematical Foundations of Software Development, Proceedings of the International Joint Conference on Theory and Practice of Software Development (TAPSOFT), Berlin, Germany, March 25-29, 1985, Volume 1: Colloquium on Trees in Algebra and Programming (CAAP'85).
Lecture Notes in Computer Science 185 Springer 1985, ISBN 3-540-15198-2
Advanced Seminar on the Role of Semantics in Software Development
Concepts of Semantics with a View to Software Development
Manfred Broy: Specification and Top Down Design of Distributed Systems.
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