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2. [2] J. Kawakita: Zoku Hassoho (More Abduction), Chuokoronsha, Tokyo (1970) (in Japanese).
3. [3] J. Kawakita: KJ Ho - Konton Wo Shite Katarashimeru (KJ Method - Let Chaos Narrate), Chuokoronsha, Tokyo (1986) (in Japanese). [Included in Kawakita Jiro Chosakushu (Collected Works of Kawakita Jiro), 5, Chuokoronsha (1996)].
4. [4] Kyoto University Study Group for Field Informatics ed.: Firudo Johogaku Nyumon (Introduction to Field Informatics), Kyoritsu Shuppan, Tokyo (2009) (in Japanese).
5. [5] Y. Kinoshita, T. Takai and H. Ohsaki: Fieldwork in the study of formal methods, Journal of Information Processing Society of Japan, 49 (5), 499-505 (2008) (in Japanese).