@article{GDZPPN00116936X,
title = {Bounds for a Class of Linear Functionals with Applications to Hermite Interpolation.},
journal = {Numerische Mathematik},
volume = {15},
year = {1970},
pages = {362-369},
zbl = {0214.41405},
url = {http://dml.mathdoc.fr/item/GDZPPN00116936X}
}
BRAMBLE, J.H.; HILBERT, S.R. Bounds for a Class of Linear Functionals with Applications to Hermite Interpolation.. Numerische Mathematik, Tome 15 (1970) pp. 362-369. http://gdmltest.u-ga.fr/item/GDZPPN00116936X/