Eigenvalues below the lower bound of minimal operators of singular Hamiltonian expressions. - Zhaowen Zheng; Jiangang Qi; Shaozhu Chen (Comput. Math. Appl., 2008)

Classification of Non-self-adjoint Singular Sturm-Liouville Difference Equations. - Huaqing Sun; Jiangang Qi; Haibin Jing (Appl. Math. Comput., 2011)

Eigenvalue problems for fractional differential equations with right and left fractional derivatives. - Jing Li; Jiangang Qi (Appl. Math. Comput., 2015)

Non-real eigenvalues of one dimensional p-Laplacian with indefinite weight. - Bing Xie; Jiangang Qi; Shaozhu Chen (Appl. Math. Lett., 2015)

Note on a nonlocal Sturm-Liouville problem with both right and left fractional derivatives. - Jing Li; Jiangang Qi (Appl. Math. Lett., 2019)

Sturm-Liouville Problems Involving Distribution Weights and an Application to Optimal Problems. - Hongjie Guo; Jiangang Qi (J. Optim. Theory Appl., 2020)

The Properties of Eigenvalues and Eigenfunctions for Nonlocal Sturm-Liouville Problems. - Zhiwen Liu; Jiangang Qi (Symmetry, 2021)

The Uniform Lipschitz Continuity of Eigenvalues of Sturm-Liouville Problems with Respect to the Weighted Function. - Jing Xu; Zhiwen Liu; Jiangang Qi (Symmetry, 2023)

Asymptotic analysis of the first eigenvalue for the Sturm-Liouville problems with coupled boundary conditions. - Xinyu Zhang; Jiangang Qi; Chunyan Sun (Appl. Math. Comput., 2026)