Clemens Hackl (Ed.): Programming Methodology, 4th Informatik Symposium, IBM Germany, Wildbad, September 25-27, 1974. Lecture Notes in Computer Science 23 Springer 1975

(1975)
  • Burt M. (1975) Burt M. Leavenworth: Non-Procedural Programming. 362-386
  • Harwood G. (1975) Harwood G. Kolsky: APLGOL - A Structured Programming Language for APL. pp161-191