1. Bader, D. L. and Bowker, P. (1983). Mechanical characteristics of skin and underlying tissues in vivo. Biomaterials, 4, 305–308
2. Bader, D. L. and Hawken, M. B. (1986). Pressure distribution under the ischium of normal subjects. J. Biomed. Eng., 8, 353–357
3. Bader, D. L., Gwillim, J., Newson, T. P. and Harris, J. D. (1985). Pressure measurement at the patient support interface. In Whittle, M. W. and Harris, J. D. (eds), Biomechanical Measurement in Orthopaedic Practice, Oxford University Press, Oxford, pp. 145–150
4. Chow, W. W. and Odell, E. I. (1974). Deformation and stresses in soft body tissues of a sitting person. J. Biomech. Eng., 100, 79–87
5. Cochrane, G. M. and Wishere, E. R. (1988). In Wheelchairs, Equipment for the Disabled, Oxford, pp. 28–29