Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Informatica
Specification and Analysis of Embedded Systems

Bergstra, J.& Klop, J. W. (1981). A formalized proof system for total correctness of while programs : (preprint). In Stichting Mathematisch Centrum. Informatica (IW 175/81). Stichting Mathematisch Centrum.