你的链接是这样的文章：
Density-free convergence properties of various estimators of entropy
作者：László Györfi
Edward C. van der Meulen
Hungarian Academy of Sciences, Technical University of Budapest, Budapest, Hungary
Department of Mathematics, Katholieke Universiteit Leuven, Leuven, Belgium
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A Test for Normality Based on Sample Entropy
Oldrich Vasicek
Journal of the Royal Statistical Society. Series B (Methodological)
Vol. 38, No. 1 (1976), pp. 54-59

Density-free convergence properties of various estimators of entropy
Laszlo Gyorfi, Edward C. van der Meulen
Computational Statistics & Data Analysis
Volume 5, Issue 4, September 1987, Pages 425-436