R.  Bekchiev, ?The subfamily Pselaphinae (Coleoptera: Staphylinidae) of southwestern Bulgaria II: Belasitsa Mts.?, Biologia (Bratislava), vol. 66, no. 3, pp. 506-508, 2011.

R.  Bekchiev, ?A study of the Pselaphinae (Coleoptera, Staphylinidae) in the Rhodope Mountains (Bulgaria)?, in Biodiversity of Bulgaria 4. Biodiversity of Western Rhodopes (Bulgaria and Greece) II., P.  Beron, Ed. Sofia: Pensoft Publishers & National Museum of Natural History, Bulgarian Academy of Sciences, 2011, p. 267?278.