1. Triangulations by reflections with applications to approximations;Allgower,1978
2. The self-adaptive approach in the finite element method;Babuska,1976
3. On uniform approximation by splines;de Boor;J. Approx. Theory,1968
4. Splines as linear combinations of B-splines;de Boor,1976
5. Spline approximation by quasi-interpolants;de Boor;J. Approx. Theory,1973