@article{StoegglSperlich2015,
  author    = {Thomas L. St{\"o}ggl and Billy Sperlich},
  title     = {The training intensity distribution among well-trained and elite endurance athletes},
  journal   = {Frontiers in Physiology},
  volume    = {6},
  number    = {295},
  doi       = {10.3389/fphys.2015.00295},
  year      = {2015},
}