Zill, Dennis G. <br/><br/>
Differential Equations: With Boundary-value Problems 

 - 3rd ed. 
 - Boston:  PWS Publishing Company,  1993 
 - xvi,775p. 
<br/><br/><label>ISBN: </label>0-534-93158-8 
<br/><br/><label>Subjects--Personal Names: </label><br/>Humanities & Natural Science
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.35 ZIL