Overview of BEPCII Linac Design       49
  G. Pei (IHEP)    
       
  The CLIC Positron Production Scheme       94
  L. Rinolfi (CERN), T. Kamitani (KEK)    
       
  Present Performance and Future Upgrade of the KEKB Electron Linac       382
  K. Furukawa (KEK)