@book
{TN_libero_mab2,
author = {
Institut slavjanovedenija
Tretʹjakov, Petr N.
},
title = {
Istorija Bolgarii
v dvuch tomach
},
publisher = {Izdat. Akad. Nauk SSSR},
keywords = {
Bulgarien
,
Geschichte
},
year = {19XX-},
abstract = {In kyrill. Schr., russ},
address = {
Moskva
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}