@book{31222,
	author = {Esteban, Miguel Antonio, and Gonzalez Garcia, Lorenzo,},
	title = {Problemas resueltos de olimpiadas matemáticas de Bachillerato /},
	publisher = {Editorial Tébar,},
	year = {2007.},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/17457/}
}