@article{M2AN_1971__5_2_137_0,
     author = {Petit, Marc},
     title = {Br\`eves communications. {Une} propri\'et\'e des fonctions splines d'ajustement},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {137--140},
     publisher = {Dunod},
     address = {Paris},
     volume = {5},
     number = {R2},
     year = {1971},
     mrnumber = {318733},
     zbl = {0225.65015},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1971__5_2_137_0/}
}