Spet︠s︡ializiranoto proizvodstvo na sol v Provadii︠a︡-Solnit︠s︡ata prez VI i V khil. pr. Khr. i obshtestveno-ikonomicheskoto mu vŭzdeĭstvieVasil Nikolov · First published 2021Open the Tome
Praistoricheski solodobiven t︠s︡entŭr Provadii︠a︡-Solnit︠s︡ataVasil Nikolov · First published 2008Open the Tome
Prouchvanii︠a︡ vŭrkhu neolitnata keramika v Trakii︠a︡Vasil Nikolov · First published 1998Open the Tome
Istorii︠a︡ na bŭlgarskata dŭrzhava prez srednite vekoveVasil Nikolov Zlatarski · First published 1970Open the Tome
Istorii͡a︡ na Bŭlgarskata dŭrzhava pri͡e︡z sri͡e︡dniti͡e︡ vi͡e︡koveVasil Nikolov Zlatarski · First published 1918Open the Tome
