Guterman, Martin M. <br/><br/>
Differential equations   a first course 

 -  3rd ed. 
 - New York   Saunders College Publication    1984 
<br/><br/><label>ISBN: </label>0-03-072878-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Linear equations<br/> Science<br/> Vatiable coefficients<br/>Differential equations<br/>Mathematics