Always good Turing: Asymptotically optimal probability estimation. Orlitsky, A, Santhanam, N., & Zhang, J Science, 302(5644):427–431, 2003.
bibtex   
@Article{Orlitsky2003,
author = {Orlitsky, A and Santhanam, NP and Zhang, J}, 
title = {Always good Turing: Asymptotically optimal probability estimation}, 
journal = {Science}, 
volume = {302}, 
number = {5644}, 
pages = {427--431}, 
year = {2003}, 
abstract = {}, 
location = {}, 
keywords = {}}

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