A composite step conjugate gradients squared algorithm for solving nonsymmetric linear systems. - Tony F. Chan; Tedd Szeto (Numer. Algorithms, 1994)

A Quasi-Minimal Residual Variant of the Bi-CGSTAB Algorithm for Nonsymmetric Systems. - Tony F. Chan; Efstratios Gallopoulos; Valeria Simoncini; Tedd Szeto; Charles H. Tong (SIAM J. Sci. Comput., 1994)

Composite Step Product Methods for Solving Nonsymmetric Linear Systems. - Tony F. Chan; Tedd Szeto (SIAM J. Sci. Comput., 1996)