1. The convergence rate and complexity of explicit preconditioned conjugate gradient methods based on approximate inverse banded matrix techniques;Gravvanis;Neural Parallel Sci Comput,2001
2. A note on the rate of convergence and complexity of domain decomposition approximate inverse preconditioning;Gravvanis,2001
3. The rate of convergence of explicit approximate inverse preconditioning;Gravvanis;Int J Comput Math,1996
4. Normalized explicit finite element approximate inverses;Gravvanis;Int J Differential Equations Appl,2003