1. R. Back. Correctness Preserving Program Refinements: Proof Theory and Applications, volume 131 of Mathematical Center Tracts. Mathematical Centre, Amsterdam, 1980.
2. R. Back. A calculus of refinements for program derivations. Acta Informatica, 25:593–624, 1988.
3. R. Back. Refinement calculus, part II: Parallel and reactive programs. In REX Workshop for Refinement of Distributed Systems, volume 430 of Lecture Notes in Computer Science, Nijmegen, The Netherlands, 1989. Springer-Verlag.
4. R. Back. Refining atomicity in parallel algorithms. In PARLE Conference on Parallel Architectures and Languages Europe, Eindhoven, the Netherlands, June 1989. Springer Verlag.
5. R. Back and R. Kurki-Suonio. Decentralization of process nets with centralized control. In 2nd ACM SIGACT-SIGOPS Symp. on Principles of Distributed Computing, pages 131–142. ACM, 1983.