@book
{TN_libero_mab2,
author = {
Humboldt, Wilhelm von
Flitner, Andreas
},
title = {
Werke
in 5 Bänden
},
publisher = {Rütten & Loening},
year = {19XX-},
abstract = {Lizenz. d. Wiss. Buchges., Darmstadt},
address = {
Berlin
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}