GASPARI, A. .; NADBATH, B. .; NABERGOJ, T. . The castle at Gradišče above Draga A Spanheim stronghold on the northwestern border of their domain?. Arheološki vestnik, Ljubljana, Slovenija, v. 59, 2008. Disponível em: https://ojs.zrc-sazu.si/av/article/view/8191. Acesso em: 19 may. 2024.