@article{GDZPPN002461269, title = {Optimal Extrapolation of Derivatives.}, journal = {Metrika}, volume = {34}, year = {1987}, pages = {45-60}, zbl = {0608.62088}, url = {http://dml.mathdoc.fr/item/GDZPPN002461269} }
Spruill, M.C. Optimal Extrapolation of Derivatives.. Metrika, Tome 34 (1987) pp. 45-60. http://gdmltest.u-ga.fr/item/GDZPPN002461269/