• [1] W. Orchard-Hays, ``The Duplex System for IBM's Model II CPC, A Fast Four Address, Double Operation, Floating-Decimal Set-Up,'' RM-1044, The RAND Corporation, February 23, 1953; H. M. Wagner, ``Coder's Manual for Duplex System'' and ``Stanford's Revised Duplex System--Wiring Manual,'' Technical Reports 1 and 4, Stanford Computation Center. These references give set-ups which meet the two operations per card requirement.
• [3] Tjalling C. Koopmans (ed.), Statistical Inference in Dynamic Economic Models, Cowles Commission Monograph No. 10, John Wiley & Sons, Inc., New York, N.Y.; Chapman & Hall, Ltd., London, 1950. MR 0038640

Bibliography

[1]

W. Orchard-Hays, ``The Duplex System for IBM's Model II CPC, A Fast Four Address, Double Operation, Floating-Decimal Set-Up,'' RM-1044, The RAND Corporation, February 23, 1953; H. M. Wagner, ``Coder's Manual for Duplex System'' and ``Stanford's Revised Duplex System--Wiring Manual,'' Technical Reports 1 and 4, Stanford Computation Center. These references give set-ups which meet the two operations per card requirement.

[3]

H. Hotelling, ``Some computational devices,'' Chapter in Statistical Inference in Dynamic Economic Models, Cowles Commission Monograph 10, T. C. Koopmans, ed. New York, 1950, p. 323-328. MR 0038640 (12:431f)