Orderly recruitment of muscle action potentials.

@article{Olson1968OrderlyRO,
  title={Orderly recruitment of muscle action potentials.},
  author={C B Olson and D. E. O. S. Carpenter and Elwood Henneman},
  journal={Archives of neurology},
  year={1968},
  volume={19 6},
  pages={591-7}
}