@book{93011,
	author = {Jorge Manuel, Norma and Pérez Méndez, Luis Enrique.},
	title = {Nivel óptimo biológico y económico de lisina en dietas para cerdos en engorda /},
	publisher = {El autor,},
	year = {2006.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/104566.pdf}
}