@book{92269,
	author = {Chávez Pérez, Esteban.},
	title = {Impacto de enemigos naturales en el Mariposario del Parque Eco-arqueológico Xcaret, Quintana Roo /},
	publisher = {El autor,},
	year = {2006.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/103813.pdf}
}