[ACM] CACM 18(10) (Oct 1975)

(1957) Communications of the ACM  

Astrahan, M. (1975) Astrahan, M. M. and D. D. Chamberlin Implementation of a structured English query language Nan C. Shu , Barron C. Housel , Vincent Y. Lum, (1975) Nan C. Shu , Barron C. Housel , Vincent Y. Lum, "CONVERT: a high level translation definition language for data conversion"