1. A generalized conjugate gradient, least square method;Axelsson;Numer. Math.,1987
2. A transpose-free squared Lanczos algorithm and application to solving nonsymmetric linear systems;Chan,1991
3. Krylov subspace iterative methods for nonsymmetric indefinite linear systems;Chronopoulos,1990
4. s-step iterative methods for (non)symmetric (in) definite linear systems;Chronopoulos;SIAM J. Numer. Anal.,1991
5. On squaring Krylov subspace iterative methods for nonsymmetric linear systems;Chronopoulos,1989