Hille, Einar <br/><br/>
Ordinary differential equations in the complex domain 

 - New York  John Wiley  1976 
 - xi, 484p., 22 cm. 
 - Pure and applied mathematics .
<br/><br/><label>ISBN: </label>0471399647 
<br/><br/><label>Dewey Class. No.: </label>515.352,  / DD, HIl