1. Manipulation;Cassidy,1988
2. Anatomical Basis of Low Back Pain;Giles,1980
3. Some physical mechanisms and effects of spinal adjustments;Sandoz;Ann Swiss Chiro Assoc,1976
4. Analysis of the joint crack by simultaneous recording of sound and tension;Meal;J Manip Physiol Ther,1986
5. Cracking in the metacarpophalangeal joints;Roston;J Anat,1947