A class of Renyi Information Estimators for Multidimensional Densities, N. Leonenko, L. Pronzato, and V. Savani, Annals of Statistics 36, Number 5, Pages 2153-2182, 2008.
Leonenko-Pronzato-Savani nearest neighbor estimator
Leonenko-Pronzato-Savani nearest neighbor estimator
Leonenko-Pronzato-Savani nearest-neighbor estimator