Viron
["Five Paradigm Shifts in Programming Language Design and Their Realisation in Viron, a Dataflow Programming Environment", V. Pratt, 10th POPL, ACM 1983, pp. 1-9].
MegaLexica
["Five Paradigm Shifts in Programming Language Design and Their Realisation in Viron, a Dataflow Programming Environment", V. Pratt, 10th POPL, ACM 1983, pp. 1-9].