American Mathematical Society: Inside the AMS. In: Notices of the American Mathematical Society. Band55, Nr.7, August 2008, S.842 (ams.org [PDF]).
columbia.edu
stat.columbia.edu
Tian Zheng, Zhiliang Ying: Columbia University Statistics. (columbia.edu [PDF]).
doi.org
Joseph L. Gastwirth, Yulia R. Gel, Weiwen Miao: The impact of LeveneĀ“s test of equality of variances on statistical theory and practice. In: Statistical Science. Band24, Nr.3, S.343–360, doi:10.1214/09-STS301.