Fryer, Gary and Fossum, Christian (2010) Therapeutic mechanisms underlying muscle energy approaches. In: Tension-type and cervicogenic headache : pathophysiology, diagnosis, and management. Fernández-de-las-Peñas, César, Arendt-Nielsen, Lars and Gerwin, Robert D, eds. Jones and Bartlett's contemporary issues in physical therapy and rehabilitation medicine series . Jones and Bartlett Publishers, Sudbury, Mass., USA, pp. 221-229.

Fryer, Gary, Johnson, Jane C and Fossum, Christian (2010) The use of spinal and sacroiliac joint procedures within the British osteopathic profession. Part 2: Treatment. International Journal of Osteopathic Medicine, 13 (4). pp. 152-159. ISSN 1746-0689

Fryer, Gary and Fossum, Christian (2010) Muscle Energy techniques. In: Tension-type and cervicogenic headache: pathophysiology, diagnosis, and management. Fernández-de-las-Peñas, César, Arendt-Nielsen, Lars and Gerwin, Robert D, eds. Jones and Bartlett's contemporary issues in physical therapy and rehabilitation medicine series . Jones and Bartlett Publishers, Sudbury, Mass., USA, pp. 309-326.

Fryer, Gary, Bird, Michael, Johnson, Jane C, Robbins, Barry and Fossum, Christian (2010) Resting electromyographic activity of deep thoracic transversospinalis muscles identified as abnormal with palpation. Journal of the American Osteopathic Association, 110 (2). pp. 61-68. ISSN 0098-6151

Fryer, Gary, Johnson, Jane C and Fossum, Christian (2010) The use of spinal and sacroiliac joint procedures within the British osteopathic profession. Part 1: Assessment. International Journal of Osteopathic Medicine, 13 (4). pp. 143-151. ISSN 1746-0689

Fossum, Christian and Fryer, Gary (2009) Cervical joint manipulative procedures. In: Tension-type and cervicogenic headache: pathophysiology, diagnosis, and management. Fernández-de-las-Peñas, César, Arendt-Nielsen, Lars and Gerwin, Robert D, eds. Contemporary Issues in Physical Therapy and Rehabilitation Medicine . Jones and Bartlett Publishers, Sudbury, Massachusetts, pp. 273-290.