Gayler, Joerg DESY at DESY: Building: 1c Room: 358 Phone: 3233 Private Phone: {49}(40)817900 direct dial: {49}(40)8998- Ext.: -3233 address: Deutsches Elektronen-Synchrotron, DESY P.O.Box D-22603 HAMBURG H1 member e-mail: gayler@mail.desy.de