Geodesic
Spline approximation method
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 47 (2007) no. 6, pp. 939-943 
V. V. Gorskii. Spline approximation method. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 47 (2007) no. 6, pp. 939-943. http://geodesic.mathdoc.fr/item/ZVMMF_2007_47_6_a0/
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     title = {Spline approximation method},
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     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2007_47_6_a0/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A system of relations is presented for determining optimal coefficients for a set consisting of an arbitrary number of smoothly matched cubic polynomial dependences. As an example, the method is used to construct optimal approximating formulas for the viscosity of air in thermochemical equilibrium as a function of enthalpy.

[1] Linnik Yu. V., Metod naimenshikh kvadratov, Energiya, M., 1976

[2] Sokolova I. A., “Koeffitsienty perenosa i integraly stolknovenii vozdukha i ego komponent”, Fiz. kinetika. Aerofiz. issl., Sb. tr., v. 4, In-t teor. i prikl. mekhan. SO AN SSSR, Novosibirsk, 1974, 39–104

[3] Capitelli M., Colonna G., Gorse C., D'Angola A., “Transport properties of high temperature air in local thermodynamic equilibrium”, European Phys. J., 11 (2000), 279–289