W. B. Fisher, A. A. G. Requicha, N. M. Samuel, and H. B. Voelcker, "Part and assembly description languages II: Definitional facilities in PADL-1.n and command facilities in the PADL-1.0/2 processor" Tech. Memo. No. 20b, Production Automation Project, Univ. of Rochester, 1978

(1978)

Languages mentioned