《宋书·志·卷十五》
博士段畅接受并申述了杜莲的意旨，援引《礼记》的有关解说，而使杜预的论说完备。
博士段暢承述预旨，推引《礼》传以成其说。
The Doctor, Duan Chang, accepted and elaborated on Du Lian's intent, citing the explanations in the Classic of Rites, and thus completed Du Yu's theory.