A Weak Galerkin Finite Element Method Can Compute Both Upper and Lower Eigenvalue Bounds. - Qigang Liang; Xuejun Xu; Liuyao Yuan (J. Sci. Comput., 2022)

Computing Both Upper and Lower Eigenvalue Bounds by HDG Methods. - Qigang Liang; Xuejun Xu; Liuyao Yuan (Comput. Methods Appl. Math., 2025)