1. Some recent developments in finite element analysis
2. On the rates of convergence of the finite element method
3. Thep-Version of the Finite Element Method
4. and , ‘A-posteriori error estimates for the finite element method’, Tech. Report TR-581, Inst. for Physical Science and Technology, Univ. of Maryland (1979).
5. and , ‘Reliable error estimation and mesh adaptation in the finite element method’, Computational Methods in Nonlinear Mechanics (Ed.), North Holland, Amsterdam, (1980), pp. 67-108.