Multi-step preconditioned iteration method for nonsymmetric linear systems. - Toshiyuki Kohno; Hiroshi Niki; Masataka Usui (Int. J. Comput. Math., 1995)

On the preconditioned sor method. - Masataka Usui; Toshiyuki Kohno; Hiroshi Niki (Int. J. Comput. Math., 1995)

An extension of the criteria for generalized diagonally dominant matrices. - Masunori Harada; Mastaka Usui; Hiroshi Niki (Int. J. Comput. Math., 1996)

On iterative methods for solving a semi-linear eigenvalue problem. - Hideo Sawami; Hiroshi Niki (Int. J. Comput. Math., 1996)

A generalization of the adaptive gauss-seidel method for Z-matrices. - Hisashi Kotakemori; Hiroshi Niki; Naotaka Okamoto (Int. J. Comput. Math., 1997)

New criteria for generalized diagonally dominant matrices. - Emiko Ishiwata; Yoshiaki Muroya; Masunori Harada; Hiroshi Niki (Int. J. Comput. Math., 1998)

A nonparameter criterion for generalized diagonally dominant matricesGeneralized diagonally dominant matrices. - Lei Li; Hiroshi Niki; Morito Sasanabe (Int. J. Comput. Math., 1999)

An extended GS method for dense linear systems. - Hiroshi Niki; Toshiyuki Kohno; Kuniyoshi Abe (J. Comput. Appl. Math., 2009)

Letter to the Editor: A note on the preconditioned Gauss-Seidel (GS) method for linear systems. - Toshiyuki Kohno; Hiroshi Niki (J. Comput. Appl. Math., 2010)

Comment on 'A comparison theorem of the SOR iterative method'. - Hiroshi Niki; Toshiyuki Kohno (J. Comput. Appl. Math., 2010)