@article{GDZPPN001173634, title = {Konvergenz optimaler Differentiationsformeln.}, journal = {Numerische Mathematik}, volume = {26}, year = {1976}, pages = {421-426}, language = {de}, url = {http://dml.mathdoc.fr/item/GDZPPN001173634} }
Pallaschke, E. Konvergenz optimaler Differentiationsformeln.. Numerische Mathematik, Tome 26 (1976) pp. 421-426. http://gdmltest.u-ga.fr/item/GDZPPN001173634/