On the preconditioned conjugate gradient method for complex symmetric systems. - Xiang Yuan; Nai-Min Zhang (Appl. Math. Lett., 2021)

On the preconditioned MINRES method for solving singular linear systems. - Lin-Yi Hong; Nai-Min Zhang (Comput. Appl. Math., 2022)

On SMSNSSOR iteration method for solving complex symmetric linear systems. - Xue-Qin Long; Nai-Min Zhang; Xiang Yuan (Int. J. Comput. Math., 2024)