1. The ALEPH Collaboration, http://alephwww.cern.ch/.
2. The DELPHI Collaboration, http://delphi.web.cern.ch/Delphi/.
3. The L3 Collaboration, http://l3www.cern.ch/.
4. The OPAL Collaboration, http://opal.web.cern.ch/Opal/.
5. Broken symmetries, massless particles and gauge fields;Higgs;Phys. Lett.,1964