@article{GDZPPN001163469,
title = {Optimal Points for Numerical Differentiation.},
journal = {Numerische Mathematik},
volume = {2},
year = {1960},
pages = {214-227},
zbl = {0099.33703},
url = {http://dml.mathdoc.fr/item/GDZPPN001163469}
}
SALZER, H.E. Optimal Points for Numerical Differentiation.. Numerische Mathematik, Tome 2 (1960) pp. 214-227. http://gdmltest.u-ga.fr/item/GDZPPN001163469/