José Meseguer. A Birkhoff-Like Theorem for Algebraic Classes of Interpretations of Program Schemes. In Josep Díaz, Isidro Ramos, editors, Formalization of Programming Concepts, International Colloquium, Peniscola, Spain, April 19-25, 1981, Proceedings. Volume 107 of Lecture Notes in Computer Science, pages 152-168, Springer, 1981.
Abstract is missing.