1. mc-obj: A C Interpreter for obj;Cavenaghi,1987
2. Programming in Prolog;Clocksin,1981
3. The Design of a Rewrite Rule Interpreter from Algebraic Specifications;Coleman;IEEE Trans. Software Eng.,1987
4. Fundamentals of Algebraic Specification 1. Equations and Initial Semantics;Ehrig,1985
5. Principles of obj-2;Futatsugi,1985