Kapoor.N.M. <br/><br/>
Text book of differential equations 

 - Delhi  Pitambar publishing company(P) ltd.  1999 
 - 809p. 
<br/><br/><label>ISBN: </label>81-209-0012-x 
<br/><br/><label>Dewey Class. No.: </label>515.35 kap.P2