@article{GDZPPN001177818, title = {Alternation for Best Spline Approximations}, journal = {Numerische Mathematik}, volume = {42}, year = {1983}, pages = {207-222}, zbl = {0489.65010}, url = {http://dml.mathdoc.fr/item/GDZPPN001177818} }
Nürnberger, G.; Sommer, M. Alternation for Best Spline Approximations. Numerische Mathematik, Tome 42 (1983) pp. 207-222. http://gdmltest.u-ga.fr/item/GDZPPN001177818/