The Effects of Stage Four Sleep Deprivation.

@article{Agnew1964TheEO,
  title={The Effects of Stage Four Sleep Deprivation.},
  author={H W Agnew and W. B. Webb and Robert L. Williams},
  journal={Electroencephalography and clinical neurophysiology},
  year={1964},
  volume={17},
  pages={68-70}
}