References
- Travell JG, Simons DG Myofacial Pain and Dysfunction The Trigger Point Manual Williams & Wilkins, Baltimore, London 1983, 1993
- Burn L, Patern JK Musculoskeletal Medicine The Spine Kluwer Academic Publishers, Dordrecht, Boston, London 1990
- Lewit K, Liebenson C Palpation: problems and implications J Manip Physiol Ther 16:586-590 1993