Ivanov, Dimiter A; Ashraf, Abdul Rahman; Mosbrugger, Volker; Palamarev, E (2002): Miocene microflora of Deleina (Bulgaria). PANGAEA, https://doi.org/10.1594/PANGAEA.207515, In supplement to: Ivanov, DA et al. (2002): Palynological evidence for Miocene climate change in the Forecarpathien Basin (Central Paratethys, NW Bulgaria). Palaeogeography, Palaeoclimatology, Palaeoecology, 178(1-2), 19-37, https://doi.org/10.1016/S0031-0182(01)00365-0