@article{HeynFleckenstein2021,
  author    = {Jens Michael Heyn and Johannes Fleckenstein},
  title     = {Incidence of injury and pain in referees in German national handball leagues: a cohort study},
  journal   = {BMC sports science, medicine \& rehabilitation},
  volume    = {13},
  number    = {art. 88},
  pages     = {1 -- 7},
  doi       = {10.1186/s13102-021-00320-1},
  year      = {2021},
}