1. Iterative procedures for improving penalty function solutions of algebraic systems
2. ‘NIKE2D: an implicit, finite-deformation, finite-element code for analysing the static and dynamic response of two-dimensional solids’, Rept. UCRL-52678, Univ. of California, Lawrence Livermore National Laboratory. (1979).
3. A finite element method for a class of contact-impact problems
4. and , ‘Contact problems in elastostatics’, in Finite Elements: Special Problems in Solid Mechanics, Vol. IV (Eds. and ), Prentice-Hall, Englewood Cliffs, N. J., 1984.
5. ‘Exterior penalty methods for contact problems in elasticity’, in Nonlinear Finite Element Analysis in Structural Mechanics (Eds. ), Springer-Verlag, Berlin, Heidelberg, New York, 1980.