ELA articles which reference this paper are

Rafael Bru; Francisco Pedroche; Daniel B. Szyld
Subdirect sums of S-strictly diagonally dominant matrices,
Electron. J. Linear Algebra 15 (2006), 201-209.

Yan Zhu; Ting-Zhu Huang
Subdirect sums of doubly diagonally dominant matrices,
Electron. J. Linear Algebra 16 (2007), 171-182.