Title: Single and Multi-Photon Events with missing energy 
       in  e+e- collisions at sqrt(s) = 192-202 GeV.


    Single and multi-photon events with missing energy are analysed
    using data collected with the L3 detector at LEP at 
    centre-of-mass energies of 192--202 GeV, for a total of 233 pb-1 of
    integrated luminosity.
    The total cross section of the process  e+e- --> nu bar(nu)gamma(gamma) is
    found in agreement with the Standard Model.
    Deviations are observed as far as the differential cross section
    is concerned. The multi-photon channel is in agreement with the
    Standard Model expectation both in the rate and in the
    two-photon recoil mass distribution.
    In the latter channel, upper limits on cross sections of supersymmetric processes
    are set and interpretations in supersymmetric models provide
    improved limits on the masses of the lightest neutralino.
  
Parallel session: 11
Plenary Talks   : 7a, 9