Elster, Robert J. <br/><br/>
The International Who;s Who 2007 

 - 70th ed. 
 - London  Europa Pub.  2000 
 - 2342p. 
<br/><br/><label>ISBN: </label>1-85743-366-1 
<br/><br/><label>Dewey Class. No.: </label>920  In8I