Ditkin V A <br/><br/>
Operational calculus in two variables and its applications 

 -  1962 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>24599 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B48, K21