@misc{indiciae0c50e213a26d,
  title = {[Performance development in the Engadin ski marathon].},
  author = {R Aellen and P Lardon and U Boutellier},
  year = {1991},
  url = {https://pubmed.ncbi.nlm.nih.gov/1767277/},
  note = {Source identifier: 1767277}
}