@book{90074,
	author = {Núñez Bautista, Milton Rodrigo.},
	title = {Programa (GraDiD) para el cálculo de los grados días de desarrollo /},
	publisher = {El autor,},
	year = {2005.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/101604.pdf}
}