@book{108465,
	author = {Carmona, Eduardo Alejandro and Hernández Berumen, José de Jesús,  and Universidad Autónoma de Zacatecas.},
	title = {Grupos de investigadores },
	publisher = {Universidad Autónoma de Zacatecas, },
	year = {2009},
	address = {Zacatecas, México : },
	edition = {1a ed.}
}