Dobrev, V.K. <br/><br/>
Lecture Notes in Physics 
/by V.K. Dobrev 
 - New York:  Springer-Verlag;  1977. 
 - 279p. 
<br/><br/><label>ISBN: </label>354008150 
<br/><br/><label>Dewey Class. No.: </label>530.143  / DOB/L