In this paper author presents a symbolic cluster shared by the peoples of the western Caucasus — the Abkhazians and Georgians in particular — and two Indo-European speech communities: the Ossetes, who have lived in the central Caucasus for over two millenia, and the Greeks.
Tuite, K. 1998. Achilles and the Caucasus. Journal of Indo-European Studies. vol. 26, #3-4, 89– 343.