M. J. Geyer, D. M. Brienza, P. Karg, E. Trefler and S. Kelsey, “A Randomized Control Trial to Evaluate Pressure-Reducing Seat Cushions for Elderly Wheelchair Users,” Advances in Skin and Wound Care, Vol. 14, 2001, pp. 120-129. http://dx.doi.org/10.1097/00129334-200105000-00008
 M. Ferrarin, G. Andreoni and A Pedotti, “Comparative Biomechanical Evaluation of Different Wheelchair Seat Cushions,” Journal of Rehabilitation Research and Development, Vol. 37, 2000, pp. 315-324.
 D. M. Brienza, K. C. Chung, C. E. Brubaker, J. Wang, T. E. Karg and C. T. Lin, “A System for the Analysis of Seat Support Surfaces Using Surface Shape Control and Simultaneous Measurement of Applied Pressure,” IEEE Transactions on Rehabilitation Engineering, Vol. 4, 1996, pp. 103-113. http://dx.doi.org/10.1109/86.506407
 J. B. Reswick and J. E. Roger, “Experience at Rancho Los Amigos Hospital with Devices and Techniques to Prevent Pressure Sores,” In: Bedsore Biomechanics, University Park Press, Baltimore, 1976, pp. 301-310.
 I. Swain, “The Measurement of Interface Pressure,” In: D. Bader, C. Bouten, D. Colin and C. Oomens, Eds., Pressure Ulcer Research: Current and Future Perspectives, Springer-Verlog, Berlin, 2005, p. 52.
 M. Yip, D. Da He, E. winokur, A. G. Balderrama, R. Sheridan and H. Ma, “A Flexible Pressure Monitoring System for Pressure Ulcer Prevention,” 31st Annual International Conference of the IEEE EMBS, 2009, pp. 1212-1215.
 Y. Yang, J. Wang, Z. Gao and Y. Zhou, “Design and Preliminary Evaluation of an Air-Alternating Wheelchair Seating System for Pressure Ulcer Prevention,” International Conference on Bioinformatics and Biomedical Technology, 2010, pp. 239-243.