Bai , ZhongzhiLi , Guiqing and Lu , Linzhang. (2004). Combinative Preconditioners of Modified Incomplete Cholesky Factorization and Sherman-Morrison-Woodbury Update for Self-Adjoint Elliptic Dirichlet-Periodic Boundary Value Problems.
Journal of Computational Mathematics. 22 (6).
833-856.
doi: