Geodesic
Symmetrizatton of global splines
Matematičeskoe modelirovanie, Tome 11 (1999) no. 8, pp. 116-126.

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Symmetric forms are investigated for polynoms and global splines. They are shown to be essentially perspective than non-symmetric forms for least square problems. Algorithms for approximation coefficients finding occur equally simple but much more stable at round off errors. It permits to achieve better approximation accuracy. 
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     author = {N. N. Kalitkin and N. M. Shlyakhov},
     title = {Symmetrizatton of global splines},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {116--126},
     publisher = {mathdoc},
     volume = {11},
     number = {8},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1999_11_8_a9/}
}
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N. N. Kalitkin; N. M. Shlyakhov. Symmetrizatton of global splines. Matematičeskoe modelirovanie, Tome 11 (1999) no. 8, pp. 116-126. http://geodesic.mathdoc.fr/item/MM_1999_11_8_a9/