1. and The Finite Element Method, McGraw-Hill, London, 1989.
2. Finite Element Fundamentals, Prentice-Hall, Englewood Cliffs, N.J., 1975.
3. The Finite Element Method for Elliptic Problems, North-Holland, Amsterdam, 1978.
4. Incremental Finite Element Modelling in Solid Mechanics, PWN/Ellis Horwood, Warszawa, 1989.
5. ?Displacement and equilibrium models in the finite element method?, in and (eds.), Stress Analysis, Wiley, New York, 1965.