The Temperatures of Red Supergiants: how cool are the coolest massive stars?B. Davies, R.-P. Kudritzki, B. Plez, M. Bergemann, A. Lançon, S. Trager, Z. Gazak, C. Evans and A. ChiavassaEAS Publications Series, 60 (2013) 69-76DOI: https://doi.org/10.1051/eas/1360007
