1. Variations of the intra-abdominal pressure during weight lifting in various postures;Davis;J. Anat.,1956
2. The role of the intra-abdominal pressure in relieving the pressure on the lumbar inter-vertebral discs;Bartelink;J. Bone Jt Surg.,1957
3. Measurement of the intra-abdominal pressure in relation to weight lifting of the lumbosacral spine;Eie;J. Oslo City Hospital,1962
4. Trunk stress in the construction industry;Stubbs,1976
5. Radio pills: their use in monitoring back stress;Davis;J. Med. Eng. Tech.,1977