Bogolubov,  Nikolai Nikolaevich  <br/><br/>
The problems of exactly solvable model systems /                                   
Nikolai Nikolaevich Bogolubov. 
 - Kiev,  1973. 
 - 17 p. 
 - Academy of Sciences of Ukrainian SSR : Preprint .
<br/><br/><label>Subjects--Index Terms: </label>ფიზიკა თეორიული ფიზიკა 
<br/><br/><label>Universal Decimal Class. No.: </label>531(041)