@article{GDZPPN00116676X, title = {Smoothing by Spline Functions.}, journal = {Numerische Mathematik}, volume = {10}, year = {1967}, pages = {177-183}, zbl = {0161.36203}, url = {http://dml.mathdoc.fr/item/GDZPPN00116676X} }
REINSCH, CH.H. Smoothing by Spline Functions.. Numerische Mathematik, Tome 10 (1967) pp. 177-183. http://gdmltest.u-ga.fr/item/GDZPPN00116676X/