Geodesic
Reinsch's method for solving the smoothing problem in several dimensions
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 30 (1990) no. 2, pp. 186-192 Cet article a éte moissonné depuis la source Math-Net.Ru

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Reinsch's method for constructing cubic smoothing splines is generalized to the multidimensional case. Solution of the smoothing problem reduces to repeated solution of systems of equations with positive definite matrices. The algorithm is described in detail. 
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M. I. Ignatov; A. B. Pevnyi. Reinsch's method for solving the smoothing problem in several dimensions. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 30 (1990) no. 2, pp. 186-192. http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_2_a1/

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