1. F. Abramovici, “The Shepard interpolation as the best average of a set of data,” Personal communication.
2. The resolving power of gross earth data;Backus;Geophys. J. R. Astr. Soc.,1968
3. R. Farwig, Rate of convergence of moving least squares interpolation methods, submitted for publication.
4. Shepard's method of ‘metric interpolation’ to bivariate and multivariate data;Gordon;Math. Comp.,1978