1. On preconditioning and convergence accelaration in sparse matrix problems;Axelsson,1974
2. Solution of linear systems of equations: Iterative methods;Axelsson,1976
3. On preconditioned conjugate gradient methods;Axelsson,1978
4. O. Axelsson, Conjugate gradient type methods for unsymmetric and inconsistent systems of linear equations, Report 78.03R, Dept. of Computer Sciences, Chalmers Univ. of Technology, Göteborg, Sweden; Linear Algebra and Appl., to appear.
5. A generalized conjugate gradient direction method and its application on a singular perturbation problem;Axelsson,1979