@book{89000,
	author = {Navarro López, Erik Rafael.},
	title = {Tolerancia a bajas temperaturas de genotipos cultivados, semicultivados y silvestre de nochebuena /},
	publisher = {El autor,},
	year = {2004.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/100528.pdf}
}