Boyce, William E. <br/><br/>
Elementary differential equations and boundary value problems / 
William E. Boyce, Richard C. DiPrima. 
 - 6th ed. 
 - New York :  Wiley,  1997. 
 - xvi, 749 p. :  col. ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0471089559 (cased) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.<br/>Boundary value problems.