Measurement of the Gamma^* Gamma^* Cross Section                     
                      using Double Tag Events                                  
  
 The cross section for the process                                             
          e+e- --> e+e- Gamma^* Gamma^* --> e+e- X,                            
 where X denotes the hadronic final state, has been measured using             
 the OPAL detector. Both scattered electrons have been tagged in the           
 silicon-tungsten luminometers. The results are compared to Monte              
 Carlo models and BFKL calculations.                                           
  
 Parallel session :2                   
 Plenary  session :12