1. Realizable and unrealizable specifications of reactive systems;Abadi,1989
2. Correctness Preserving Program Refinements: Proof Theory and Applications;Back,1980
3. Changing data representation in the refinement calculus;Back,1989
4. Refinement Calculus: A Systematic Introduction;Back,1998
5. Duality in specification languages: A lattice-theoretical approach;Back;Acta Inform.,1990