The Variance of Logarithms: 10690. - Robert Helmbold; Wook Kim; Robert A. Agnew; Zafar Ahmed; Saïd Amghibech; Kenneth F. Andersen; P. J. Anderson; G. Bower; Bruce S. Burdick; Robin J. Chapman; Daniele Donini; Patrick J. Fitzsimmons; et al. (Am. Math. Mon., 2000)

Problem 11191. - Barthel Wayne Huff (Am. Math. Mon., 2005)

Another Urn and Balls Problem: 11191. - Barthel Wayne Huff; Gregory Keselman (Am. Math. Mon., 2007)