Golombe M. <br/><br/>
Elements of ordinary differential equations. 
Golombe M., Shanks M. 
 - New York a.o.  McGraw-Hill  1950 
 - 564 p. 
<br/><br/> International Series in Pure and Applied Mathematics 
<br/><br/><label>Dewey Class. No.: </label>517.91/93(07)