Politically, the countries of Armenia , Georgia and Azerbaijan belong to the South Caucasus . Geographically, it covers most of the southern capping of the Greater Caucasus, the Colchian Plain , the Kura Aras Lowlands , the Lesser Caucasus , the Armenian Jawater Mountains , the Talysh Mountains and the Lenkoran Lowlands . As a political unit, the Transcaucasian Federation briefly existed in 1918 and the Transcaucasian SFSR within the Soviet Union between 1922 and 1936 .
- Article South Caucasus in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)http: //vorlage_gse.test/1%3D042384~2a%3D~2b%3DS%C3%BCdcaucasus
- Caucasus. CIA World Factbook
- Caucasus. Physical Geography, Population, and Economy . Encyclopaedia Iranica