- Cheng-Yi Zhang; Shuanghua Luo; Aiqun Huang; Chengxian Xu
*The eigenvalue distribution of block diagonally dominant matrices and block H-matrices,*

Electron. J. Linear Algebra 20 (2010), 621-639. - Cheng-Yi Zhang, Yan Zhu, Shuanghua Luo, and Jicheng Li
*On generalized Schur complement of nonstrictly diagonally dominant matrices and general H-matrices.*

Electron. J. Linear Algebra 23 (2012) pp. 801-814.