Dynamic Programming Under Uncertainty with a Quadratic Criterion Function Herbert A. Simon Econometrica 1956 24(1), 74
Biometrika Tables for Statisticians, Volume I A. Hald; E. S. Pearson; H. O. Hartley Econometrica 1956 24(1), 99
Statistical Tables for Biological, Agricultural and Medical Research H. O. Hartley; Sir Ronald A. Fisher; F Yates Econometrica 1956 24(1), 90