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2. Best, E.: Adequacy properties of path programs. Theor. Comput. Sci. 18, 149?171 (1982)
3. Best, E.: Relational semantics of concurrent programs (with some applications). In: Formal description of programming concepts II (D. Bjørner, ed.), pp. 431?452. Amsterdam: North Holland 1983
4. Best, E., Shields, M.W.: Some equivalence results on free choice nets and simple nets and on the periodicity of live and safe free choice nets. Proc. CAAP'83, Lecture Notes in Computer Science, Vol. 159, pp. 141?154. Berlin-Heidelberg-New York: Springer 1983
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