1. ‘Three-dimensional formulation of the boundary element method with parabolic interpolation’ (in Spanish), Ph.D. Thesis, Polytechnical University of Madrid, Spain, 1981.
2. ‘Error analysis in the boundary element method in elasticity’ (in Portuguese), Ph.D. Thesis, Technical University of Lisbon, Portugal, 1987.
3. ‘Solution techniques for boundary integral matrices’, Proc. Int. Conf on Numerical Methods for Trans, and Coupled Problems, Venice, 1984.
4. Iterative methods for solving boundary element equations
5. ‘Iterative techniques for solving linear systems of equations originated from the boundary element method’ (in Portuguese), M.Sc. Thesis, COPPE/Federal University of Rio de Janeiro, Brazil, 1989.