@book
{TN_libero_mab2,
author = {
Wagner, Richard
Heidelbach, Nikolaus
AND
Wagner, Nike
},
title = {
Das Rheingold
},
publisher = {Reclam},
isbn = {3150108543},
isbn = {9783150108543},
keywords = {
Wagner, Richard
},
year = {[2012]},
address = {
Stuttgart
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}