[1] Bozukov V.S., Todorov O.B., Ivanova R.S. 2023 New data on the Middle Miocene flora of the Satovcha Graben (SW Bulgaria). Phytologia Balcanica 29 (3): 313–320. https://doi.org/10.7546/PhB.29.3.2023.1

[2] Villa A., Macaluso L., Mörs T. 2024 Miocene and Pliocene amphibians from Hambach (Germany): New evidence for a late Neogene refuge in northwestern Europe. Palaeontologia Electronica 27 (1): 1–56. https://doi.org/10.26879/1323