Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Rekenafdeling

van Wijngaarden, A. (1966). Recursive definition of syntax and semantics : (Proceedings IFIP working conference on formal language description languages, Vienna 1966, p 13-24). In Stichting Mathematisch Centrum. Rekenafdeling (MR 79/66/R). Stichting Mathematisch Centrum.