@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/