@book{36161,
	author = {Pitt, Valerie.},
	title = {The penguin dictionary of physics /},
	publisher = {Penguin },
	year = {1977.},
	series = {Penguin reference books.},
	address = {Harmondsworth ;},
	note = {Una versión abreviada de A new dictionary of Physics publicado en 1975.}
}