Cao , YangShen , Qin-Qin and Chen , Ying-Ting. (2022). Additive Inexact Block Triangular Preconditioners for Saddle Point Problems Arising in Meshfree Discretization of Piezoelectric Equations.
East Asian Journal on Applied Mathematics. 12 (2).
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doi:10.4208/eajam.250921.120122