Simić, Vojislav M. 1979. “On Chemical Composition of Roman Copper, Bronze and Brass Coins Minted in the 1st, 2nd and 3rd Cеnturies in Local Balkan Mints”. Balcanica - Annual of the Institute for Balkan Studies, no. X (December):31-50. https://balcanica.rs/index.php/journal/article/view/1281.