High QE Photocathodes Performance during Operation at FLASH/PITZ Photoinjectors Baehr, J. W. ; Krasilnikov, M. ; Lederer, S. ; Stephan, F. ; Han, J. H. ; Schreiber, Siegfried ; Michelato, P. ; Monaco, L. ; Pagani, C. ; Sertore, D. Abstract Publication: 22nd Particle Accelerator Conference (PAC 07) Pub Date: 2007 Bibcode: 2007pac..conf.2763B