Kabuzan, Vladimir M. <br/><br/>
Naselenie Severnogo Kavkaza v XIX-XX vekach :  Etnostatističeskoe issledovanie 
 The population of the Northern Caucasus Region from the 18th to the 20th centuries : Ethnostatistical study 

 - Sankt-Peterburg :  BLIC,  1996 
 - 220 S. Fest.