1. Ohnishi, H., Mochizuki, K.: Effect of delay of feedback force on perception of elastic force: a psychophysical approach. IEICE Trans. Commun. E90-B(1), 12–20 (2007)
2. Ishihara, M.: On first impression of the teaching materials which used haptic display. IEE Jpn. Trans. Fundam. Mater. 129(7), 490–491 (2009). (in Japanese)
3. Ishihara, M.: Assessment of paper’s roughnessfor haptic device. In: Proceedings of Forum Information Technology 2011, K-032, Hokkaido, Japan, September 2011. (in Japanese)
4. Hirose, M., et al. : Virtual Reality, Sangyo Tosho (1993). (in Japanese)
5. Yoshida, T., Muranaka, N., Imanishi, S.: a construction of educational application system for calligrapy master based on virtual reality. IEE Jpn. Trans. Electron. Inf. Syst. 117-C(11), 1629–1634 (1997). (in Japanese)