[1] Bai, Z.-Z.: Structured preconditioners for nonsingular matrices of block two-by-two structures. Math. Comput. 75, 791-815 (2006)
[2] Bai, Z.-Z.: Motivations and realizations of Krylov subspace methods for large sparse linear systems. J. Comput. Appl. Math. 283, 71-78 (2015)
[3] Bai, Z.-Z.: Quasi-HSS iteration methods for non-Hermitian positive definite linear systems of strong skew-Hermitian parts. Numer. Linear Algebra Appl. 25, e2116 (2018)
[4] Bai, Z.-Z., Benzi, M.: Regularized HSS iteration methods for saddle-point linear systems. BIT Numer. Math. 57, 287-311 (2017)
[5] Bai, Z.-Z., Duff, I.S., Wathen, A.J.: A class of incomplete orthogonal factorization methods. I: methods and theories. BIT Numer. Math. 41, 53-70 (2001)
[6] Bai, Z.-Z., Duff, I.S., Yin, J.-F.: Numerical study on incomplete orthogonal factorization preconditioners. J. Comput. Appl. Math. 226, 22-41 (2009)
[7] Bai, Z.-Z., Golub, G.H.: Accelerated Hermitian and skew-Hermitian splitting iteration methods for saddle-point problems. IMA J. Numer. Anal. 27, 1-23 (2007)
[8] Bai, Z.-Z., Golub, G.H., Li, C.-K.: Optimal parameter in Hermitian and skew-Hermitian splitting method for certain two-by-two block matrices. SIAM J. Sci. Comput. 28, 583-603 (2006)
[9] Bai, Z.-Z., Golub, G.H., Ng, M.K.: Hermitian and skew-Hermitian splitting methods for non-Hermitian positive definite linear systems. SIAM J. Matrix Anal. Appl. 24, 603-626 (2003)
[10] Bai, Z.-Z., Golub, G.H., Pan, J.-Y.: Preconditioned Hermitian and skew-Hermitian splitting methods for non-Hermitian positive semidefinite linear systems. Numer. Math. 98, 1-32 (2004)
[11] Bai, Z.-Z., Ng, M.K., Wang, Z.-Q.: Constraint preconditioners for symmetric indefinite matrices. SIAM J. Matrix Anal. Appl. 31, 410-433 (2009)
[12] Bai, Z.-Z., Pan, J.-Y.: Matrix Analysis and Computations. SIAM, Philadelphia (2021)
[13] Bai, Z.-Z., Parlett, B.N., Wang, Z.-Q.: On generalized successive overrelaxation methods for augmented linear systems. Numer. Math. 102, 1-38 (2005)
[14] Bai, Z.-Z., Wang, Z.-Q.: On parameterized inexact Uzawa methods for generalized saddle point problems. Linear Algebra Appl. 428, 2900-2932 (2008)
[15] Bai, Z.-Z., Yin, J.-F., Su, Y.-F.: A shift-splitting preconditioner for non-Hermitian positive definite matrices. J. Comput. Math. 24, 539-552 (2006)
[16] Benzi, M., Golub, G.H.: A preconditioner for generalized saddle point problems. SIAM J. Matrix Anal. Appl. 26, 20-41 (2004)
[17] Betts, J.T.: Practical Methods for Optimal Control and Estimation Using Nonlinear Programming. SIAM, Philadelphia (2010)
[18] Bjorck, A.: Numerical Methods for Least Squares Problems. SIAM, Philadelphia (1996)
[19] Cao, Y., Du, J., Niu, Q.: Shift-splitting preconditioners for saddle point problems. J. Comput. Appl. Math. 272, 239-250 (2014)
[20] Cao, Y., Miao, S.-X., Ren, Z.-R.: On preconditioned generalized shift-splitting iteration methods for saddle point problems. Comput. Math. Appl. 74, 859-872 (2017)
[21] Cao, Y., Yi, S.-C.: A class of Uzawa-PSS iteration methods for nonsingular and singular non-Hermitian saddle point problems. Appl. Math. Comput. 275, 41-49 (2016)
[22] Cao, Z.-H.: Augmentation block preconditioners for saddle point-type matrices with singular (1,1) blocks. Numer. Linear Algebra Appl. 15, 515-533 (2008)
[23] Cao, Z.-H.: Block triangular Schur complement preconditioners for saddle point problems and application to the Oseen equations. Appl. Numer. Math. 60, 193-207 (2010)
[24] Dollar, H.S., Wathen, A.J.: Approximate factorization constraint preconditioners for saddle-point matrices. SIAM J. Sci. Comput. 27, 1555-1572 (2006)
[25] Elman, H.C.: Preconditioners for saddle point problems arising in computational fluid dynamics. Appl. Numer. Math. 43, 75-89 (2002)
[26] Elman, H.C., Golub, G.H.: Inexact and preconditioned Uzawa algorithms for saddle point problems. SIAM J. Numer. Anal. 31, 1645-1661 (1994)
[27] Fortin, M., Brezzi, F.: Mixed and Hybrid Finite Element Methods. Springer-Verlag, New York (1991)
[28] Gao, W.-L., Li, X.-A., Lu, X.-M.: On quasi shift-splitting iteration method for a class of saddle point problems. Comput. Math. Appl. 79, 2912-2923 (2020)
[29] Golub, G.H., Greif, C., Varah, J.M.: An algebraic analysis of a block diagonal preconditioner for saddle point systems. SIAM J. Matrix Anal. Appl. 27, 779-792 (2005)
[30] Golub, G.H., Wu, X., Yuan, J.-Y.: SOR-like methods for augmented systems. BIT Numer. Math. 41, 71-85 (2001)
[31] Huang, Z.-G., Wang, L.-G., Xu, Z., Cui, J.-J.: The generalized modified shift-splitting preconditioners for nonsymmetric saddle point problems. Appl. Math. Comput. 299, 95-118 (2017)
[32] Huang, Z.-H., Su, H.: A modified shift-splitting method for nonsymmetric saddle point problems. J. Comput. Appl. Math. 317, 535-546 (2017)
[33] Liang, Z.-Z., Zhang, G.-F.: On block-diagonally preconditioned accelerated parameterized inexact Uzawa method for singular saddle point problems. Appl. Math. Comput. 221, 89-101 (2013)
[34] Murphy, M.F., Golub, G.H., Wathen, A.J.: A note on preconditioning for indefinite linear systems. SIAM J. Sci. Comput. 21, 1969-1972 (2000)
[35] Njeru, P.N., Guo, X.-P.: Accelerated SOR-like method for augmented linear systems. BIT Numer. Math. 56, 557-571 (2016)
[36] Pan, J.-Y., Ng, M.K., Bai, Z.-Z.: New preconditioners for saddle point problems. Appl. Math. Comput. 172, 762-771 (2006)
[37] Song, S.-Z., Huang, Z.-D.: A two-parameter shift-splitting preconditioner for saddle point problems. Comput. Math. Appl. 124, 7-20 (2022)
[38] Wathen, A.J.: Preconditioning. Acta Numer. 24, 329-376 (2015)
[39] Zhu, M.-Z., Zhang, G.-F., Liang, Z.-Z.: On generalized local Hermitian and skew-Hermitian splitting iterative method for block two-by-two linear systems. Appl. Math. Comput. 250, 463-478 (2015)
