Gold, copper mining and geoarcheology in Central Bulgaria

Kovachev Veselin Vasilev, Strashimirov Strashimir Borisov, Dabovski Christo Nikolov, Dimitrov Kalin Lyubenov, Stoyanova Daniela Stefanova, Nedialkov Rosen Nedialkov, Maleev Mihail Naidenov, Mladenov Veselin Paunov, Yovchev Danail Yankov
2010