Chhatwal, G.R. <br/><br/>
World great mathematicians 

 - New delhi  New delhi, Anmol Pub. Anmol Pub.  1999 
 - 419p. 
<br/><br/><label>ISBN: </label>81-7488-761-9 
<br/><br/><label>Dewey Class. No.: </label>510.92, C37W