Clippinger, R. F. (1 August 1962). "Fact". The Computer Journal. 5 (2): 112–119 (118 - Experience with the use of FACT). doi:10.1093/comjnl/5.2.112. ISSN0010-4620.
worldcat.org
Clippinger, R. F. (1 August 1962). "Fact". The Computer Journal. 5 (2): 112–119 (118 - Experience with the use of FACT). doi:10.1093/comjnl/5.2.112. ISSN0010-4620.