An evaluation of an external electromyographic system for recording uterine contractions during labor.

@article{Freundlich1973AnEO,
  title={An evaluation of an external electromyographic system for recording uterine contractions during labor.},
  author={J J Freundlich and Matthew Wingate},
  journal={American journal of obstetrics and gynecology},
  year={1973},
  volume={116 6},
  pages={822-6}
}