Boyce, William E  . <br/><br/>
Elementary differential equations and boundary value problems /  
by Boyce and Diprima. 
 - 7th ed /  
 - New York :   John Wiley & Sons, Inc. ,   2001 
 - xvi, 745p :  
<br/><br/><label>ISBN: </label>0-471-30789-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>B331  / P1;1-P3