@book {5712,
	title = {Variations, Variations, Variationen},
	volume = {91},
	year = {1997},
	publisher = {La Biblioth{\`e}que oulipienne},
	organization = {La Biblioth{\`e}que oulipienne},
	address = {Paris},
	author = {Georges Perec and Harry Mathews and Oskar Pastior}
}
