@book{45118,
	author = {Feynman, Richard Phillips and Leighton, Robert B},
	title = {Física Volumen 1 : Mecánica, radiación y calor =},
	publisher = {Fondo Educativo Interamericano,},
	year = {1971.},
	address = {Bogotá :},
	note = {Incluye índice alfabético.}
}