Dvornik, Francis 1893-1975.
Byzantine missions among the Slavs: SS. Constantine-Cyril and Methodius /
Francis Dvornik 
. - New Brunswick : Rutgers University Press,  1970 
. - xviii, [ii], 484, [12] p.  ill., map.  24 cm. 
 - Rutgers Byzantine series .
<br/>К.: Бібліогр. : с. 419-464, Index 
<br/><label>  ISBN: </label>8135-0613-1 
<br/><br/><label>Subjects--Personal Names: </label><br/>Cyril Saint, Apostle of the Slavs  ca. 827-869 <br/>Methodius Saint, Apostle of the Slavs  ca. 825-884(5)