Markley, Nelson G. <br/><br/>
Principles of differential equations / 
Nelson G. Markley 
 - Hoboken, NJ:   John Wiley & Sons,   2004 
 - x, 339 p.;   24 cm. 
<br/><br/>Includes bibliographical references (p. 334-336) and index 
<br/><br/><label>ISBN: </label>0471649562 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations