A Probe of New Resonant Structures with Four Fermion Processes at a 1   TeV $e^+e^-$ Collider
  Oblique contributions from vector particles that are strongly coupled to the known gauge bosons are calculated for the case of various observables at a 1 TeV $e^+e^-$ collider. Constraints provided by LEP 1 results are taken into account in a model-independent way through a dispersion relation technique. Depending on the assumed theoretical properties, mass limits of several TeV should be observable. 
J. Layssac, F.M. Renard, C. Verzegnassi