Franklin, Philip  (1898-1965). <br/><br/>
Differential equations for electrical engineers / 
by Philip Franklin. 
 - Sixth Printing. 
 - New York :  London :  Chapman & Hall,  John Wiley & Sons ;  1947. 
 - VII, [1], 299 stron :  ilustracje ;  23 cm. 
<br/><br/>Bibliografia na stronach 281-282. Indeks.