New habitats of some species of orchids on the territory of the european ecological network natura 2000 (Bulgaria). Годишник на Софийския Университет „Св. Климент Охридски“, Биологически факултет, Книга 2 – Ботаника, [S. l.], v. 107, p. 124–128, 2023. DOI: 10.60066/GSU.BIOFAC.Bot.107.124-128. Disponível em: https://annual.uni-sofia.bg/index.php/biofac-botany/article/view/1561. Acesso em: 15 dec. 2025.