@book{ 0-1499575394, title = {Der Ring des Nibelungen: Das Rheingold, die Walküre, Siegfried, Götterdämmerung}, author = {Wagner, Richard and Freyer, Achim and Ettinger, Dan}, editor = {Freyer, Achim}, editor = {Ettinger, Dan}, address = {Halle, Saale}, publisher = {Arthaus Musik}, language = {German}, note = {Dt. gesungen. - Untertitel: dt}, note = {Operninszenierung. Deutschland. 2013}, url = {https://katalog.hmt-leipzig.de/Record/0-1499575394} }