@book {1806,
	title = {Fauna Bulgarica. Hymenoptera, Formicidae},
	series = {Fauna Bulgarica},
	volume = {22},
	year = {1992},
	pages = {310},
	publisher = {Bulgarian Academy of Sciences},
	organization = {Bulgarian Academy of Sciences},
	address = {Sofia},
	author = {Atanassov, Neno and Dlusskij, Genadij M.}
}
