Rabrenović, D., Radulović, V. and Jankičević, J. (2000) “Several ammonitic species of the genus Orthosphinctes from kimmeridgian of Stara PLANINA, Eastern Serbia”, Geološki anali Balkanskoga poluostrva, 63(1), pp. 91-105. Available at: https://gabp.rgf.rs/index.php/gabp/article/view/298 (Accessed: 16September2024).