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2. Codes for Boundary Value Problems in Ordinary Differential Equations: Proceedings of a Working Conference;Childs,1979
3. Adaptive Computational Methods for Partial Differential Equations;Babuška,1983
4. Accuracy Estimates and Adaptivity for Finite Elements;Babuška,1986
5. A posteriori error estimates and adaptive techniques for the finite element method;Babuška,1981