Ayres,Frank <br/><br/>
Schaum’s outline of theory and problems of differental equations 

 - Singapore :  Macgraw Hill Book Company,  1994 
 - 295. 
<br/><br/><label>ISBN: </label>0070990069  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Analysis
<br/><br/><label>Dewey Class. No.: </label>515.33  / AYR