@book{7639,
	author = {SANCHEZ CHANONA, MARIA DE L. and INSTITUTO TECNOLOGICO DE TUXTLA GUTIERREZ.},
	title = {SISTEMAS DIGITALES I/ },
	publisher = {EL AUTOR},
	year = {1997},
	address = {TUXTLA GTZ., CHIS.: },
	note = {BIBLIOGRAFIA: P. 190.}
}