TY - JOUR A1 - McClelland, L. A. S. A1 - Eldridge, J. J. T1 - Helium stars T2 - Wolf-Rayet Stars : Proceedings of an International Workshop held in Potsdam, Germany, 1.–5. June 2015 N2 - There are outstanding problems in trying to reproduce the observed nature of Wolf–Rayet stars from theoretical stellar models. We have investigated the effects of uncertainties, such as composition and mass-loss rate, on the evolution and structure of Wolf–Rayet stars and their lower mass brethren. We find that the normal Conti scenario needs to be altered, with different WR types being due to different initial masses as well as different stages of evolution. Y1 - 2015 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/8801 UR - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-88010 SP - 197 EP - 200 ER -