and is a "derivative work" from de:Bild:Sofia in BG.png (November 6, 2003, author Ronny Heidenreich, GFDL). Source: bg:Картинка:OblastVidin.png English
choice. This image is a derivative work of the following images: File:Vidin_Oblast_map.png licensed with Cc-by-sa-3.0-migrated, GFDL, GFDL-user-w 2010-11-18T19:43:07Z