1. Shida, K., Matsumoto, T., Kanazawa, T.: The development of training system for self-threading screw tightening operation. Japanese Journal of Ergonomics 37(1), 1–10 (2001)
2. Fechner, G.T.: Elemente der Psychophysik, Leipzig (1860)
3. Stevens, S.S.: On the Psychophysical Law. Psychol. Rev. 64, 158–181 (1957)
4. Toriizuka, T.: Characteristic and Application of Skillwork on Industrial Plant Maintenance, Keio Univ. (2005)
5. Matsumoto, T., Tashiro, H., Kanazawa, T.: Proposal of a set of new indices for evaluating the quality of Screwdriving Operation and a measurement device. Journal of the Society of Plant Engineers Japan 4(4), 12–20 (1993)