1. Takeuchi, Y., Okada, M., Sumi, Y., Suzuki, N.: An Approach to Social Interface Studies. Journal of Human Interface Society 7(1), 1–10 (2005) (in Japanese)
2. Kujiraoka, T.: Various Aspects of Primitive Communication. Minerva Publishing (1997) (in Japanese)
3. Kushida, S.: Transmission and Commune on Unison -description of copyright on conversation. In: Tani, Y. (ed.) Nature of the Communication Magazine. Shin-yo-sha (1997) (in Japanese)
4. Malinowski, B.: The Problem of Meaning in Primitive Languages. In: Odgen, C.K., Richards, I.A. (eds.) The Meaning og Meaning, Harcourt, Brace and World, pp. 296–336 (1923)
5. Garey, J.M.: Communication as Culture. Umwin Hyman (1989)