Ui Hakuju 宇井伯寿. Shaku Dōan kenkyū 釋道安研究. Tokyo: Iwanami shoten, 1990 (1956).
On the basis of content and the circumstances under which the translation in question was produced, Ui ascribes the preface to T1549 婆須蜜集序 to Dao'an.
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On the basis of style and content, Ui ascribes the preface to the Si ahanmu chao 四阿鋡暮抄序 to Dao'an.
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