An iterative Clough-Tocher interpolant
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 26 (1992) no. 1, p. 201-209
@article{M2AN_1992__26_1_201_0,
     author = {Farin, G. and Kashyap, P.},
     title = {An iterative Clough-Tocher interpolant},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
     publisher = {Dunod},
     volume = {26},
     number = {1},
     year = {1992},
     pages = {201-209},
     zbl = {0756.65002},
     mrnumber = {1155008},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1992__26_1_201_0}
}
Farin, G.; Kashyap, P. An iterative Clough-Tocher interpolant. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 26 (1992) no. 1, pp. 201-209. http://www.numdam.org/item/M2AN_1992__26_1_201_0/

[1] R. Barnhill, Representations and approximation of surfaces. In J. R. Rice, editor, Mathematical Software III, Academic Press, 1977. | MR 489081 | Zbl 0407.68030

[2] R. Barnhill and G. Farin, C1 quintic interpolation over triangles : two explicit representations. Internat. J. Numer. Methods Engrg., 17, 1763-1778, 1981. | Zbl 0477.65009

[3] R. Barnhill, G. Farin, L. Fayard and H. Hagen, Twists, curvatures, and surface interrogation. Comput. Aided Design, 20 (6), 341-346, 1988. | Zbl 0656.65026

[4] W. Boehm, G. Farin and J. Kahmann, A survey of curve and surface methods in CAGD. Comput. Aided Geom. Design, 1 (1), 1-60, 1984. | Zbl 0604.65005

[5] R. Clough and J. Tocher, Finite element stiffness matrices for analysis of plates in blending. In Proceedings of Conference on Matrix Methods in Structural Analysis, 1965.

[6] G. Farin, Curves and Surfaces for Computer Aided Geometric Design. Academic Press, 1988, second édition 1990. | MR 974109 | Zbl 0694.68004

[7] G. Farin, A modified Clough-Tocher interpolant. Comput. Aided Geom. Design, 2 (1-3), 19-27, 1985. | Zbl 0586.65007

[8] G. Farin, Triangular Bernstein-Bézier patches. Comput. Aided Geom. Design, 3 (2), 83-128, 1986. | MR 867116

[9] G. Farin, N. Rein, N. Sapidis and A. Worsey, Fairing cubic B-spline curves. Comput. Aided Geom. Design, 4 (1-2), 91-104, 1987. | MR 898026 | Zbl 0644.65007

[10] G. Farin, N. Sapidis, Curvature and the fairness of curves and surfaces. IEEE Comput. Graph. Appl., 9 (2), 52-57, 1989.

[11] A. Worsey, G. Farin, Contouring a bivariate quadratic polynomial over a triangle. Comput. Aided Geom. Design, 7 (1-4), 337-352, 1990. | MR 1074619 | Zbl 0726.65014

[12] A. Worsey, G. Farin, An n-dimensional Clough-Tocher element. Constr. Approx., 3, 99-110, 1987. | MR 889547 | Zbl 0631.41003