1. American Society for Testing and Materials (2016) Standard test method for rubber property—Durometer hardness. ASTM. https://doi.org/10.1520/D2240-15
2. Anderson J, Williams AE, Nester C (2020) Development and evaluation of a dual density insole for people standing for long periods of time at work. J Foot Ankle Res 13:1–13. https://doi.org/10.1186/s13047-020-00402-2
3. Ishihara S, Ishihara K, Nagamachi M, Nishino T, Komatsu K (2001a) An analysis of non-linearity characteristics on Kansei data. Syst Soc Int Des Aspects Human-Comput Interact 2(2):320
4. Ishihara S, Ishihara K, Nagamachi M, Nishino T (2001b) Mathematical modeling of nonlinearity on form ratio Kansei evaluation data. In: Proceedings of the fourth international quality management and organizational development conference, Linköping, Sweden, pp 536–542
5. Ishihara S, Ishihara K, Nagamachi M, Sano M, Fujiwara Y, Naito M, Ozaki K (2008) Developments of home electric appliances with Kansei ergonomics: Sanyo cases: Kansei and kinematic considerations on washer-dryer and electric shaver. In: 11th QMOD conference, quality management and organizational development, attaining sustainability from organizational excellence to sustainable excellence, Helsingborg