1. Biedermann H, Guttmann G (1984) Funktionelle Pathologie und Klinik der Wirbelsäule, Band 1, Teil 2, Elsevier, Munich
2. Chow WW, Odell EI (1978) Deformations and stresses in soft body tissues of a sitting person
3. DIN 53579 (2005) Testing of flexible cellular materials—Indentation test on finished parts. DIN-Normenausschuss Materialprüfung (NMP)
4. DIN EN ISO 3386-1 (2009) Polymeric materials, cellular flexible—Determination of stress-strain characteristics in compression—Part 1: low-density materials. DIN-Normenausschuss Materialprüfung (NMP)
5. Goossens RHM, Snijders CJ (1995) Design cirteria for the reduction of shear forces in beds and seats. J Biomech 28(2):225–230