Mathematical notes of the Academy of Sciences of the USSR. 

<br/><br/>
<br/><br/><label>ISSN: </label>0001-4346 
 = Mathematical notes of the Academy of Sciences of the USSR 
 = Math. notes Acad. Sci. USSR 
<br/><br/><label>CODEN: </label>MTHNB2 
<br/><br/><label>LC Class. No.: </label>QA1 
<br/><br/><label>Dewey Class. No.: </label>510