Determining the CP-eigenvalues of the Neutral Higgs Bosons of the   Minimal Supersymmetric Model in $\gam\gam$ Collisions
  We determine the optimal laser and $\ep/\em$ energies and polarizations for {\it directly} determining the CP eigenvalue of each of the neutral Higgs bosons of the Minimal Supersymmetric Model via measurement of transverse polarization cross section asymmetry in back-scattered laser photon collisions. Approximate statistical significances are computed for the measurement of the CP eigenvalue as a function of Higgs mass and other parameters of the model. 
J.F. Gunion and J.G. Kelly