1. Milgram, P., Kishino, F.: A taxonomy of mixed reality visual displays. IEICE Trans. Inf. Syst. 77(12), 1321–1329 (1994)
2. Azuma, R.: A survey of augmented reality. Presence: Teleoperators Virtual Environ. 6(4), 355–385 (1997)
3. Baldi, T., Paolocci, G., Barcelli, D., Prattichizzo, D.: Wearable haptics for remote social walking. IEEE Trans. Haptics 13(4), 761–776 (2020)
4. Plante, T., Frazier, S., Tittle, A., Babula, M., Ferlic, E., Riggs, E.: Does virtual reality enhance the psychological benefits of exercise. J. Hum. Mov. Stud. 45(6), 485–507 (2003)
5. Karunarathne, D., Morales, Y., Nomura, T., Kanda, T., Ishiguro, H.: Will older adults accept a humanoid robot as a walking partner. Int. J. Soc. Robot. 11(2), 343–358 (2019)