@book{9685,
	author = {México. and Calvo Martínez, Enrique.},
	title = {Ley del Seguro Social correlacionada 2000 /},
	publisher = {Editorial Themis },
	year = {2000.},
	address = {México },
	edition = {15 ed.},
	note = {Incluye índice.}
}