Zill, Dennis G. <br/><br/>
Differential equations with boundary-value problems / 
Dennis G. Zill 
 - 3rd ed. 
 - Boston :  PWS Publishing Company,  1993 
 - vii, 787p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0534931588 
<br/><br/><label>LCCN: </label>92-017344 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations<br/>Boundary value problems