参考文献：行列変換とグリッディング

Robert J.Robert J. Renka, Interpolation of Data on the Surface of a Sphere, 1984, ACM Transactions on Mathematical Software.

Robert J.Renka, A Triangle-based C1 Interpolation Method, Rocky Mountain J.Math.Vol.14, Winter 1984, pp.223-237.

Gianluca Donato and Serge Belongie (2002), Approximation Methods for Thin Plate Spline Mappings and Principal Warps.

Stephen Henley, (1981), Nonparametric Geostatistics, Applied Science Publishers LTD.

Michael L.Stein, (1999), Interpolation of Spatial Data: Some Theory for Kriging.Springer-Verlag, New York.

Noel A.C.Cressie, (1991), Statistics for Spatial Data, Jon Wiley & Sons.