Saturation and desaturation with N2 and He at 4 atm.

@article{buehlmann1967SaturationAD,
  title={Saturation and desaturation with N2 and He at 4 atm.},
  author={andrea. buehlmann and Patrik Frei and Helmut Keller},
  journal={Journal of applied physiology},
  year={1967},
  volume={23 4},
  pages={458-62}
}