@book{100469,
	author = {Barrios Colmenares, Mario Giovanni and Huerta Bravo, Maximino},
	title = {Suplementación de selenio a becerras de reemplazo},
	publisher = {El autor,},
	year = {2010.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/112129.pdf}
}