@article{GDZPPN001166891, title = {L-Splines.}, journal = {Numerische Mathematik}, volume = {10}, year = {1967}, pages = {345-369}, url = {http://dml.mathdoc.fr/item/GDZPPN001166891} }
VARGA, R.S.; SCHULTZ, M.H. L-Splines.. Numerische Mathematik, Tome 10 (1967) pp. 345-369. http://gdmltest.u-ga.fr/item/GDZPPN001166891/