Implicitly restarted and deflated GMRES. - C. Le Calvez; Brígida Molina (Numer. Algorithms, 1999)

A Multipole Approach for Preconditioners. - Ph. Guillaume; A. Huard; C. Le Calvez (International Conference on Computational Science (2), 2002)

A Block Constant Approximate Inverse for Preconditioning Large Linear Systems. - Ph. Guillaume; A. Huard; C. Le Calvez (SIAM J. Matrix Anal. Appl., 2003)