1. Representation and Approximation of Surfaces;Barnhill,1977
2. Properties of Shepard's surfaces;Barnhill;Rocky Mountain J. Math.,1983
3. Rate of convergence of Shepard's global interpolation formula;Farwig,1984
4. Rate of convergence of moving least squares interpolation methods;Farwig,1985
5. Scattered data interpolation: tests of some methods;Franke;Math. Comp.,1982