@mastersthesis {339,
	title = {Faunistichni, ekologichni i zoogeografski izsledvaniya v{\textquoteright}rkhu stafilinidite (Coleoptera, Staphylinidae s. str.) ot tsentralnata chast na Dunavskata ravnina.},
	volume = {PhD},
	number = {Avtoreferat na disertatsiya},
	year = {1987},
	pages = {30},
	school = {Spetsializiran nauchen s{\textquoteright}vet po Zoologiya i Khidrobiologiya pri BAK, Sofiya},
	author = {Raichev, I. M.}
}
@mastersthesis {78,
	title = {Faunistical research on Pselaphinae fauna (Coleoptera: Staphylinidae) in several regions of south-west Bulgaria},
	year = {2007},
	month = {2007},
	pages = {32},
	school = {Sofia University {\textquoteright}St. Climent Ohridski"},
	address = {Sofia},
	author = {Bekchiev, R.}
}
