"This preface, composed in 705 by Tang Zhongzong as a tribute to Yijing (635-713), is in QuanTangwen:
17.17b-20a. A complete copy of the text in P.3154 is thought to be by the same hand responsible for this ms. Another copy is in Or.8210/S.1177. Both of these mss. are also linked to the Suvarnaprabhasa sutra."
(JB)