@article{HamannGraefenerLiermannetal.2019,
  author    = {Wolf-Rainer Hamann and G. Gr{\"a}fener and A. Liermann and Rainer Hainich and Andreas Alexander Christoph Sander and Tomer Shenar and Varsha Ramachandran and Helge Tobias Todt and Lida Oskinova},
  title     = {The Galactic WN stars revisited},
  journal   = {Astronomy and astrophysics : an international weekly journal},
  series    = {Impact of Gaia distances on fundamental stellar parameters},
  volume    = {625},
  doi       = {10.1051/0004-6361/201834850},
  year      = {2019},
}