Greene, Eric M. “Healing Breaths and Rotting Bones: On the Relationship between Buddhist and Chinese Meditation Practices during the Eastern Han and Three Kingdoms Period.” Journal of Chinese Religion 42, no. 2 (2014): 145-184.
Greene mentions briefly that terms in a passage of T631 that he analyses suggest that it is "likely to be a Chinese composition", not later than Dao'an, since it appears in his catalogue.
Greene mentions briefly that terms in a passage of T631 that he analyses suggest that it is "likely to be a Chinese composition", not later than Dao'an, since it appears in his catalogue. T0631; 佛說法律三昧經