Supported by numerous statistical analyses, he attempts to reconstruct the process of the gradual Iranization, dividing the material into three historical periods (beginning 1000 , 744 , 704 B.C.E., respectively).
Documentation is best along the Zagros: Iranian names were overall the largest group (some 45 percent), followed by Kassite names (in the range 8-5 percent) and Hurro-Urartian names (7-1 percent).