@book{95050,
	author = {Madrid Obando, Krystian Paulino},
	title = {Estudio agroeconómico del uso de bajas temperaturas en cucurbitáceas},
	publisher = {El autor,},
	year = {2007},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/106661.pdf}
}