Modeling Hydrogen-Rich Wolf-Rayet Stars in M33 O LGA M A RY E VA Stavropol State University, Stavropol, Russia; olga.maryeva@gmail.com ABSTRACT Most massive stars spend a short time as a Luminous Blue Variables (LBVs) before becoming WN stars. Detailed relations between LBV, WN and hydrogen-rich WN (WNH) stars are poorly known. ... We present the results of a spectral variability study of two very luminous stars in the M33 galaxy ­ LBV V532 and late WN star (possibly, dormant LBV) FSZ35. ...