Pashko, P. llazar. “Upper Silurian (Gorstian, Ludfordian, PŘÍDOLÍ) Graptolite Biozonation in the Muhurr Area (Albania)”. Bulletin of the Geological Society of Greece, vol. 56, no. 1, Apr. 2020, pp. 147-66, doi:10.12681/bgsg.21688.