@book{235368,
	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://www.digitaliapublishing.com/a/17457/}
}