Gusev S. V. North-Eastern Caucasus in the Middle Ages: Coins Tell. In Russian/Gusev S. V. Severo-Vostochnyy Kavkaz v epokhu srednevekovya: monety rasskazyvayut. Library of the Russian ethnographer. Moscow, 1995. 108 p. Please contact us for details on condition of available copies of the book. SKUalb7dd31dced5ecd617.