%0 Article %J Seismological Research Letters %D 2020 %T Validity of Resolving the 785~km Discontinuity in the Lower Mantle with P'P' Precursors? %A Zhang, B. %A Zeng, X. %A Xie, J. %A Cormier, V. F. %1 10.1785/0220200210 %K AxiSEM