@misc
{TN_libero_mab2,
author = {
Beethoven, Ludwig van
Hauschild, Peter
AND
Erber, Gerhard
},
title = {
Sonatinen und leichte Sonaten
für Klavier
},
publisher = {Peters},
year = {1988},
address = {
Leipzig
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}