Bekchiev, R., Kostova, R., Langourov, M. and Simov, N. 2025. The subfamily Pselaphinae (Coleoptera: Staphylinidae) of North Bulgaria. I. Zootaxa. 5647, 3 (Jun. 2025), 289–300. DOI:https://doi.org/10.11646/zootaxa.5647.3.5.