  A search for chargino, neutralino and scalar lepton pair-production in e+e-
collisions at the centre-of-mass energy of 189 GeV is performed under the
assumptions that R-parity is not conserved in decays and only one of the
coupling constants lambda_ijk, lambda'_ijk or lambda''_ijk is non-negligible.
No signal is found in a data sample corresponding to an integrated luminosity
of 176.4 pb-1. Limits on the production cross sections, on the Minimal
Supersymmetric Standard Model parameters and on the masses of the
supersymmetric particles are derived.
