@book{31659,
	author = {Pinheiro, Jose C. and Bates, Douglas M. and Bates, Douglas M. ; jt. auth.},
	title = {Mixed-effects models in S and S-Plus},
	publisher = {Springer Science+Business Media, Inc.},
	year = {2000},
	series = {Statistics and Computing},
	address = {New York}
}