@article{GDZPPN001170082, title = {Numerical Differentation of Functions of Very Many Variables.}, journal = {Numerische Mathematik}, volume = {18}, year = {1971}, pages = {327-335}, zbl = {0215.27301}, url = {http://dml.mathdoc.fr/item/GDZPPN001170082} }
Tsuda, T. Numerical Differentation of Functions of Very Many Variables.. Numerische Mathematik, Tome 18 (1971) pp. 327-335. http://gdmltest.u-ga.fr/item/GDZPPN001170082/