@article{GDZPPN001177982,
title = {Natural Spline Functions, Their Associated Eigenvalue Problem.},
journal = {Numerische Mathematik},
volume = {42},
year = {1983},
pages = {107-118},
zbl = {0522.41011},
url = {http://dml.mathdoc.fr/item/GDZPPN001177982}
}
Utreras, Florencio. Natural Spline Functions, Their Associated Eigenvalue Problem.. Numerische Mathematik, Tome 42 (1983) pp. 107-118. http://gdmltest.u-ga.fr/item/GDZPPN001177982/