Letters of Nichiren by Philip B. Yampolsky, Burton WatsonGeorge J. TanabeMN 52:4 (1997) pp. 566–568 → jstor.org/stable/2385707ShareArchitecture and Authority in Japan by William H. CoaldrakeOriginary Enlightenment: Tendai Hongaku Doctrine and Japanese Buddhism by Ruben L. F. Habito