Title: Measurement of the Photon Structure Function at High Q2 at LEP

The structure functions of real and virtual photons are derived
from cross section measurements of the reaction
 e+e- ---> e+e-  + (hadrons) at LEP.
The reaction is studied at sqrt(s) approximatly equal 91 GeV  with the L3
detector. One of the final state electrons is detected at a large angle 
relative to the beam direction, leading to Q2 values between
40 GeV2 and 500 GeV2.
The other final state electron is either undetected or it is detected at
a four-momentum transfer squared P2 between 1 GeV2 and 8 GeV2.
These measurements are compared with predictions of the Quark Parton
Model and other QCD based models.  


Parallel sessions: 2, 3
Plenary sessions: 11, 12 
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*L3 paper: 204
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