@article{ludwig pöllmann1993produced,
  title={Sounds Produced by the Mandibular Joint in a Sample of Healthy Workers},
  author={ludwig pöllmann},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={7},
  number={4},
  pages={359--361},
  doi = {10.11607/jofph.07359},
  year={1993}
}