Strumiński, Bohdan.
Linguistic interrelations in early Rus’: Northmen, Finns, and East Slavs, (ninth to eleventh centuries) /
Bohdan Strumiński 
. - Roma : Fenice Edizioni, Edmonton : Toronto : Canadian Institute of Ukrainian Studies Press,  1996 
. - 353 p.  24 cm. 
 - Collana di filologia e letterature slave  Nuova serie ; 2 .
<br/><label>  ISBN: </label>1-895571-16-2