@misc
{TN_libero_mab2,
author = {
Bach, Johann Sebastian
Wolff, Christoph
},
title = {
Musikalisches Opfer
BWV 1079 = Musical offering
},
publisher = {Bärenreiter-Verl.},
year = {19XX-},
address = {
Kassel
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}