@book{171942,
	author = {Semerena, Anne Alberro and Bulajich Manfrino, Radmila,},
	title = {Problemas avanzados},
	publisher = {Universidad Nacional Autónoma de México. Sociedad Matemática Mexicana,},
	year = {2010.},
	series = {Cuadernos de Olimpiadas Mexicanas},
	address = {México :},
	edition = {1a ed.}
}