Geodesic
Algorithms of smoothing of surfaces defined on irregular spaced data sets
Matematičeskoe modelirovanie, Tome 21 (2009) no. 6, pp. 69-78.

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This paper is devoted to a problem of analytical description of surfaces. The information is defined on irregularly data sets. There are described algorithms of automation of process of construction of smoothing bi-quadric two dimensional splines which are presented on rectangular grids which are not generally equals uniform. Developed algorithms allow for error estimation and are easily generalized on splines of the higher order. 
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     author = {K. N. Markov and P. D. Shirkov},
     title = {Algorithms of smoothing of surfaces defined on irregular spaced data sets},
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K. N. Markov; P. D. Shirkov. Algorithms of smoothing of surfaces defined on irregular spaced data sets. Matematičeskoe modelirovanie, Tome 21 (2009) no. 6, pp. 69-78. http://geodesic.mathdoc.fr/item/MM_2009_21_6_a5/

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