Zill, Dennis G. <br/><br/>
Differential equations with boundary-value problems / 
Dennis G. Zill & Michael R. Cullen. 
 - 3rd ed. 
 - Boston :  PWS-KENT,  c1992. 
 - xvi, 775 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0534931588 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.<br/>Boundary value problems.