Elster, Robert <br/><br/>
The International Who's Who 2013 

 - 76th ed. 
 - London  Routledge  2012 
 - xxi p. + 2428 
<br/><br/><label>ISBN: </label>9781857436372 
<br/><br/><label>Dewey Class. No.: </label>920.02 El 79 I