Prof. Go Nakagawa, Prof. Hiroyuki Hata, 'Editors' (1998), pp. 3–4, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Japan, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Prof. Go Nakagawa, Prof. Hiroyuki Hata, 'Note' (1995), pp. 5–6, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Japan, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Prof. Go Nakagawa, Prof. Hiroyuki Hata, 'The Constitution of Japan' (1995), pp. 6–14, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Japan, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Prof. Go Nakagawa, Prof. Hiroyuki Hata, 'Index' (1995), pp. 20–22, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Japan, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)