@article{M2AN_1971__5_3_9_0,
     author = {Tissier, G.},
     title = {Approximation d'une fonction d\'efinie sur une sph\`ere dans une base de fonctions sph\'eriques de {Legendre}},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {9--28},
     publisher = {Dunod},
     address = {Paris},
     volume = {5},
     number = {R3},
     year = {1971},
     mrnumber = {303208},
     zbl = {0256.65005},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1971__5_3_9_0/}
}