Boyce, William E. <br/><br/>
Elementary differential equations / 
William E. Boyce, Richard C. DiPrima 
 - 7th ed. 
 - New York:  Wiley,  c2001 
 - xvi, 592 p. ;  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0471319988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations<br/>Boundary value problems