Patrick Cousot, Radhia Cousot Sometime = Always + Recursion = Always on the Equivalence of the Intermittent and Invariant Assertions Methods for Proving Inevitability Properties of Programs. [Citation Graph (0, 0)][DBLP] Acta Inf., 1987, v:24, n:1, pp:1-31 [Journal]
Ryszard Janicki A Formal Semantics for Concurrent Systems with a Priority Relation. [Citation Graph (0, 0)][DBLP] Acta Inf., 1987, v:24, n:1, pp:33-55 [Journal]