Kohler, E Werner. . <br/><br/>
Elementary differential equations with boundary value problems / 

 - 2nd ed 
 -  Pearson Addison-Wesley,   [2014] 
 - ILL 
<br/><br/><label>ISBN: </label>0321288351 
<br/><br/><label>Dewey Class. No.: </label>515.35