1. A compatible triangular element including vertex rotations for plane elasticity analysis
2. A triangular membrane element with rotational degrees of freedom
3. ‘Evolution of assumed stress hybrid finite element’, in (ed.), Accuracy, Reliability and Training in FEM Technology, Proceedings of the Fourth World Congress and Exhibition on Finite Element Methods, Interlaken, Switzerland, 1984, pp. 602-619.
4. On symbolic manipulation and code generation of a hybrid three-dimensional solid element
5. and , Concepts and Applications of Finite Element Analysis, 3rd edn, Wiley, New York, 1989.