*Atlas of the Caucasian Languages with very detailed Language Guide (by Yuri B. Koryakov)*Comparative Notes on Hurro-Urartian, Northern Caucasian and Indo-European by V. V. Ivanov
Delmar, NY: Caravan Books, 1994Кавказские языки* TITUS Language map by Jost Gippert* Atlas of the Caucasian Languages with Language Guide (by Yuri B. Koryakov)