1. S. Abramsky. ‘Experiments, powerdomains and fully abstract models for applicative multiprogramming', LNCS Vol.158, pp.1–13 (1983).
2. K. Apt, N. Francez and W. de Roever. ‘A proof system for communicating sequential processes', TOPLAS pp. 359–385 (1980).
3. H. Barringer and R. Kuiper. ‘Towards the hierarchical, Temporal logic, specification of concurrent systems',presented at STL/SERC Workshop on the Analysis of Concurrent Systems, Cambridge. (1983).
4. H. Barringer, R. Kuiper and A. Pnueli. ‘Now you may compose temporal logic specifications', Proceedings STOC (1984).
5. S. Brookes and W. Rounds. ‘Behavioural equivalence relations induced by programming logics', LNCS Vol.154 pp. 97–108 (1983).