number of people ever spoke Urartian. Urartian words are not borrowed in any numbers by neighboring peoples, and the language disappears from the written
the Proto-Armenian language in Eastern Anatolia. Annual of Armenian Linguistics. 1992, 13: 51–54. Diakonoff, I. M. Hurro-Urartian Borrowings in Old Armenian
North Caucasian and Abkhaz-Adyghean Languages Comparative Notes on Hurro-Urartian, Northern Caucasian and Indo-European (页面存档备份,存于互联网档案馆) by Vyacheslav V