@book{2327,
	author = {Vallejo Ayala, Patricio and   Zambrano Orejuela, Jorge; autor.},
	title = {Física vectorial 2 /},
	publisher = {Rodin, },
	year = {2002},
	address = {Quito, Ecuador :},
	edition = {Sexta edición},
	note = {Incluye índice.}
}