1. T. Sonoyama, “Outline of Design (in Japanese),” Mainichi Communications, 2007.
2. Fujiko · F · Fujio, “Doraemon,” Vol.6, p.45, “The Pocket Patch,” Shogakukan, 1974, English version.
3. M. Shiomi et al., “Communication Robot for Science Museum connected with Ubiquitous Sensor Network,” Interaction, pp. 127-134, 2005.
4. S. Hirama, “Chicken Nugget Server Robot with Tensor Flow,” Nikkei Linux Dec. 2016 (in Japanese).