1. SEGA TOYS CO., LTD. Pekoppa,
http://www.segatoys.co.jp/pekoppa/
2. Kawakami, A., Tsukada, K., Kambara, K., Siio, I.: PotPet: Pet-like Flowerpot Robot. In: Proceedings of 5th International Conference on Tangible, Embedded, and Embodied Interaction (TEI 2011), pp. 263–264 (2011)
3. Bowen, D.: Tele-present wind. MIT Press Journals 44(4), 358–359 (2011)
4. Nakata, S., Hashimoto, Y., Kajimoto, H.: The University of Electro-Communications. Qualitative repletion of presentation of the feeling of living matter by presenting tactile sensation (2009)
5. Shibata, F.: The mental commitment robot “PARO”which enriches people’s mind (2009),
http://www.sonpo.or.jp/archive/publish/bousai/jiho/pdf/no_231/yj23144.pdf