Dorkenoo, Ephrem S.; Lemaître, Michel; Lemoine, Michel; "A Procedural Language for the Relational Data Base Management System Syntex" pp453-457

Information Processing 77 (Proc. (1977) Information Processing 77 (Proc. IFIP Congress 77, Toronto, August 8-12, 1977), Vol. 7, Elsevier North-Holland, Inc., New York, 1977  

Languages mentioned SYNTEX {1972}