Pliny the Elder. The Natural History (Bostock J., Riley H. T.) – London, 1855.
Pliny. Natural history (with Eng. trans. Rackham H., Jones W. H. S.). – London, 1961.
Ptolemy Claudius. Geography.Trans. Stevenson E. L. – New York: New York Public Library, 1932.
SRTM Data. Электронный ресурс[18].
Strabo. Geographica (ed. A. Meineke). – Lipsiae, 1877.
Strabo. The Geography (Eng. trans. H. L. Jones). – London, 1924.
Strabon. Géographie (Fr. trad. A. Tardieu). – Paris, 1890, t. III, p. 491.