Ostrowski, Donald G. <br/><br/>
Muscovy and the Mongols :  cross-cultural influences on the steppe frontier, 1304 - 1589 / 
Donald Ostrowski 
 - Cambridge [u.a.] :  Cambridge Univ. Press,  1998 
 - XVI, 329 S. 
<br/><br/><label>ISBN: </label>052159085x