TY - JOUR T1 - The Subfamily Pselaphinae (Coleoptera: Staphylinidae) of South-western Bulgaria: Rila and Pirin Mountains JF - Acta Zoologica Bulgarica Y1 - 2022 A1 - Bekchiev, R. A1 - Kostova, R. SP - 169 EP - 174 VL - 74 ER - TY - JOUR T1 - Coleoptera and Lepidoptera (Insecta) diversity in the central part of Sredna Gora Mountains (Bulgaria) JF - Bulletin of the Entomological Society of MaltaBulletin of the Entomological Society of Malta Y1 - 2019 A1 - Kostova, R. A1 - Bekchiev, R. A1 - Beshkov, S. SP - 75 EP - 95 VL - 10 ER - TY - BOOK T1 - Soil and cave invertebrates from the village Gintsi area T2 - Speleological Studies of Caves in Godech Municipality Y1 - 2016 A1 - Kostova, R. A1 - Lazarov, S. A1 - Bekchiev, R. A1 - Goranov, S. A1 - Simov, N. A1 - Beshkov, S. ED - Toshkova, V. ED - Tachev, I. SP - 116 JF - Speleological Studies of Caves in Godech Municipality PB - Association of Speleoclubs in Sofia CY - Sofia SN - ISBN 978-619-90659-1-4 ER -