Arithmancy, Theomancy, and the Soviet Economy Norman M. Kaplan Journal of Political Economy 1953 61(2), 93-116
A Note on Ruble-Dollar Comparisons Norman M. Kaplan; Eleanor S. Wainstein Journal of Political Economy 1957 65(6), 543-543
A Comparison of Soviet and American Retail Prices in 1950 Norman M. Kaplan; Eleanor S. Wainstein Journal of Political Economy 1956 64(6), 470-491