@book{1150,
	author = {RUIZ MONCAYO, A. and GONZALEZ ROBLEZ, R. O.},
	title = {INTRODUCCION A LA PROBABILIDAD/ },
	publisher = {F.C.E.},
	year = {1980},
	series = {SER. DE LA SICIEDAD MATEMATICA MEXICANA},
	address = {MEXICO: }
}