1. “On Preconditioning and Convergence Acceleration in Sparse Matrix Problems”;Axelsson;CERN,1974
2. “A Class of Iterative Methods for Finite Element Equations”;Axelsson;Comp. Meth. in Appl. Mech. and Eng.,1976
3. “Notes on the Numerical Solution of the Biharmonic Equation”;Axelsson;J. Inst. Maths. Applies.,1973
4. “An Iterative Solver for a Mixed Variable Variational Formulation of the (First) Biharmonic Problem”;Axelsson;Comp. Meth. in Appl. Mech. and Eng.,1979
5. “Preconditioning of Indefinite Problems by Regularization”;Axelsson;SIAM J. Numer. Anal.,1979