Dr. Ivonne Zavala     Address: Physikalisches Institut der Universität Bonn   Nussallee 12   53115 Bonn   Germany Office: Room 1.012 (AVZ) Phone: +49-228-73-3719 Fax: +49-228-73-3223 E-Mail: zavala (at) th.physik.uni-bonn.de   Publications (from SPIRES-SLAC)