@book{169900,
	author = {Beethoven, Ludwig van,  and Kufferath, Maurice.},
	title = {Fidelio },
	publisher = {Librairie Théatrale, },
	year = {[1967]},
	series = {Livrets d'opéras, opéras-comiques, opérettes},
	address = {Paris : }
}