Greene, Eric. “Another Look at Early ‘Chan’: Daoxuan, Bodhidharma, and the Three Levels Movement.” T’oung Pao Second Series 94, no. 1/3 (2008): 49-114.
Greene mentions that Ibuki Atsushi has shown that the Fuzhou edition of the Xu Gaoseng zhuan T2060 is the oldest. Citing Ibuki Atsushi 伊吹敦, "Zoku kōsō den no zōkō ni kansuru kenkyū 続高僧伝の増広に関する研究.” Tōyō no shisō to shūkyō 東洋の思想と宗教 7: 58-74.
Greene mentions that Ibuki Atsushi has shown that the Fuzhou edition of the Xu Gaoseng zhuan T2060 is the oldest. Citing Ibuki Atsushi 伊吹敦, "Zoku koso den no zoko ni kansuru kenkyu 続高僧伝の増広に関する研究.” Toyo no shiso to shukyo 東洋の思想と宗教 7: 58-74. T2060; 續高僧傳