2018. Flora and vegetation of forest natural habitats in Natura 2000 protected area Kamchia (BG0000116) and beach Shkorpilovtsi (BG0000100). Annual of Sofia University "St. Kliment Ohridski", Faculty of Biology, Book 2 - Botanics. 102, (Jan. 2018), 90–119. DOI:https://doi.org/10.60066/GSU.BIOFAC.Bot.102.90-119.