@inproceedings{ChakrabartiCormodeMcGregor07,
	author={A. Chakrabarti and G. Cormode and A. McGregor},
	booktitle={{ACM}-{SIAM} Symposium on Discrete Algorithms ({SODA})},
	title={A Near-Optimal Algorithm for Computing the Entropy of 
                     a Stream},
	year=2007,
}