Priv. Doz. Dr. Stefan Förste     Address: Physikalisches Institut der Universität Bonn   Nussallee 12   D-53115 Bonn   Federal Republic of Germany Office: Room 124 (AVZ) Phone: +49-228-73-2355 Fax: +49-228-73-3223 E-Mail: stefan.forste (at) durham.ac.uk   Publications (from SPIRES-SLAC)