@book{92137,
	author = {Chávez López, Arturo Moises.},
	title = {Estufa ahorradora de leña, en la Sierra Negra de Puebla :},
	publisher = {El autor,},
	year = {2006.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/103680.pdf}
}