Spherical splines
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Volume 26 (1992) no. 1, p. 1-22 
@article{M2AN_1992__26_1_1_0,
     author = {Hoschek, J. and Seemann, G.},
     title = {Spherical splines},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
     publisher = {Dunod},
     volume = {26},
     number = {1},
     year = {1992},
     pages = {1-22},
     zbl = {0755.41011},
     mrnumber = {1154997},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1992__26_1_1_0}
}

Hoschek, J.; Seemann, G. Spherical splines. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Volume 26 (1992) no. 1, pp. 1-22. http://www.numdam.org/item/M2AN_1992__26_1_1_0/

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