ΣΥΜΕΩΝΙΔΗΣ Ν., ΜΑΡΚΟΠΟΥΛΟΥ - ΔΙΑΚΑΝΤΩΝΗ Α., and ΓΙΑΝΝΟΠΟΥΛΟΣ Β. “A New Evidence of Cretaceous Echinoids at the Region Paleokastro of Stylis Area (Fthiotida District)”. Bulletin of the Geological Society of Greece, vol. 34, no. 2, Aug. 2018, pp. 523-31, doi:10.12681/bgsg.16985.