Batta, Andras. OPERA: composers - works - performes / Andras Batta , Sigrid Neef ; traslate Paul Aston...etc. - Köln : Könemann, 2000. - 923 p. : many col. ill.; 32 cm. ISBN: 3829035713. Subjects--Topical Terms: Opera. LC Class. No.: ML102. / B3 2000.