The Q^2 Dependence of the Di-Jet Cross Section in                       
                Photon-Photon Collisions at LEP                                
  
 Di-jet production is studied in collisions of quasi-real and virtual          
 photons at e+e- centre-of-mass energies from 198 to 200 GeV. The jets         
 are reconstructed using a cluster jet finding algorithm.                      
 The inclusive two-jet cross-section is measured as a function of              
 the transverse energy and the pseudorapidity of the jets and compared         
 to NLO perturbative QCD calculations and to the prediction of                 
 Monte Carlo generators using different LO parametrisations of the             
 parton distributions of the photon.                                           
  
 Parallel session : 3<br>2             
 Plenary  session :11<br>12