Title: Trunsko, Breznishko, Kiustendilsko; dokladi i materiali.
Authors: Staĭnov, Petko, 1896-1977.; Bulgarska akademiia na naukite, Sofia.; Bulgarska akademiia na naukite, Sofia.
Publisher: Izd-vo na Bulgarskata akad. na naukite,
Year: 1961