"Various techniques used in connection with random digits" by John von Neumann in "Monte Carlo Method" edited by A.S. Householder, G.E. Forsythe and H.H. Germond, 1951.
Kurt Vonnegut (2016). “If This Isn't Nice What Is? (Much) Expanded Second Edition: The Graduation Speeches and Other Words to Live By”, p.131, RosettaBooks