Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.
1
Canning, R G , Electronic Data Processing for Business and Industry, Wiley, 1956, p. 189-191.
2
"Preliminary Manuat mr Self-Checking Number Device for Types 24-26 Card Punches," International Business Machines Corp., N Y., N. Y., form 22-6022-0; p. 4-5. -
3
"Preliminary Manual of Operation, IBM; EDPM Type 705," International Business Machines Corp., 590 Madison Ave., New York 22, N. Y., Form 22-6627-3, p. 120.
4
First brought to our attention by a private communication from Win. A. Donaldson, Rolls-Royce Ltd Glasgow Scotland.