Bŭlgarsko geofizichno spisanie.
Bŭlgarska akademii︠a︡ na naukite.
[Sofii︠a︡]: Bŭlgarska akademii︠a︡ na naukite,
1975-
Chemical abstracts
Energy research abstracts
GeoRef
International aerospace abstracts
Geophysics
Izvestii︠a︡