Bloch, R. M.; Campbell, R. V. D.; Ellis, M., The Logical Design of the Raytheon Computer, Mathematical Tables and Other Aids to Computation (American Mathematical Society), 1948, 3 (24): 286–295, JSTOR 2002859, doi:10.2307/2002859.
Bloch, R. M.; Campbell, R. V. D.; Ellis, M., The Logical Design of the Raytheon Computer, Mathematical Tables and Other Aids to Computation (American Mathematical Society), 1948, 3 (24): 286–295, JSTOR 2002859, doi:10.2307/2002859.