Cronström, Christofer  <br/><br/>
Proceedings of the Gunnar Nordström symposium on theoretical physics :  August 27-30, 2003, Helsinki / 
Christofer Cronström, Claus Montonen. 
 - 	Helsinki :  Societas scientiarum fennica,   2004. 
<br/><br/><label>Universal Decimal Class. No.: </label>53