Boyce, William E. <br/><br/>
Elementary Differential Equations 

 -  9th ed. 
 - Hoboken   Wiley 
 - xviii, 632 p. 
<br/><br/><label>ISBN: </label>978-0-470-03940-3. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Differential equations<br/> Existence theorems<br/> Mathematical physics<br/>Differential equations<br/>Mathematics
<br/><br/><label>LC Class. No.: </label>QA371.B77