@book{69991,
	author = {Cervantes Sandoval, Armando. and Colegio de Postgraduados. Chapingo, Méx. Centro de Estadística y Cálculo.},
	title = {SIMBAE},
	publisher = {El autor,},
	year = {1989},
	address = {Chapingo, Méx. :},
	note = {D89-24}
}