@article{Graeter2020,
  author    = {Joachim Gr{\"a}ter},
  title     = {Free division rings of fractions of crossed products of groups with Conradian left-orders},
  journal   = {Forum mathematicum},
  volume    = {32},
  number    = {3},
  pages     = {739 -- 772},
  doi       = {10.1515/forum-2019-0264},
  year      = {2020},
}