- CYC pp. 13 and 17 for the term of ch'an-men; pp. 57, 86, 210 and 320 for ch'an-tsung. Compare Sekiguchi Shindaiaa, "Zenshū no hassei." Fukui sensei shōju ki'nen Tōyō shisō ronshü (Tokyo, 1960), pp. 321–338.
- Jan Yūn-hua, "Tsung-mi and his Analysis of Ch'an Buddhism", TP 58 (1972): 1–54; for a detailed study of Tsung-mi, see Shigeo Kamata, Shūmitsu kyōgaku no shisōshi teki kenkyū (Tokyo: Institute of Oriental Culture, University of Tokyo, 1975).
- CYC, pp. 30 and 254.
The Mind as the Buddha-Nature: The Concept of the Absolute in Ch'an Buddhism