1. Chusonji Temple and the four generations of the Fujiwara family. Tokyo: The Asahi Shimbun Company, 1950 (in Japanese).
2. Gomi F. Azuma-Kagami: modern translation, book IV. Tokyo: Yoshikawa Kōbunkan; 2007 (in Japanese).
3. Higuchi K. Skeletal reminds of the four Fujiwara generations. Jpn J Radiol Technol. 1998;54:2–20 (in Japanese).
4. Hanihara K. An additional study on the mummies, of the Fujiwara’s in the medieval age. Jpn Rev. 1996;13:11–33.
5. Nagashima T. On the flowering of Tuusonji-Lotus (Nelumbo nucifera) preserved over 800 years. Keisen Univ Bull. 2001;3:1–17.