@article{GronwaldHoosHottenrott2019,
  author    = {Thomas Gronwald and Olaf Hoos and Kuno Hottenrott},
  title     = {Effects of Acute Normobaric Hypoxia on Non-linear Dynamics of Cardiac Autonomic Activity During Constant Workload Cycling Exercise},
  journal   = {Frontiers in Physiology},
  volume    = {10},
  doi       = {10.3389/fphys.2019.00999},
  year      = {2019},
}