Bose-Einstein Correlations in e+e- -> W+W- at 172 and 183 GeV                  
  
Bose-Einstein correlations between like-charge pions are studied in hadronic   
final states produced by e+e- annihilations at center-of-mass energies of      
172 and 183 GeV. Three event samples are studied, each dominated by one of     
the processes W+W- to qqlnu, W+W- to qqqq, or (Z/g)* to qq.                    
After demonstrating the existence of Bose-Einstein correlations in W decays,   
an attempt is made to determine Bose-Einstein correlations for pions           
originating from the same W boson and from different W bosons, as well as      
for pions from (Z/g)* to qq events. Results are obtained for the individual    
chaoticity parameters lambda assuming a common source radius R.                
  
 Parallel session :5                   
 Plenary  session :6a