@article{peter svensson2001muscle,
  title={Craniofacial Muscle Pain: Review of Mechanisms and Clinical Manifestations},
  author={peter svensson,thomas graven-nielsen},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={15},
  number={2},
  pages={117--145},
  doi = {10.11607/jofph.15202},
  year={2001}
}