@book{Hastie2009,
author = {Hastie, T. and Tibshirani, R. and Friedman, J.H.},
title= {The elements of statistical learning: data mining, inference, and prediction},
year = {2009},
doi = {10.1007/978-0-387-84858-7},
address = {New York},
publisher = {Springer},
}