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2. Laws of the land in medieval Japan;Adolphson,2003
3. The Teeth and Claws of the Buddha: Monastic Warriors and Sōhei in Japanese History;Adolphson,2007
4. Akihiro ō ki, no date. Kunaicho, Tōkyō.
5. Azuma kagami: Shintei zōho kokushi taikei, 1936. Yoshikawa kōbunkan. Tōkyō. vols. 32–33.