@article{1077492062,
author = {Bergman, Stefan},
title = {The approximation of functions satisfying a linear partial
differential equation},
journal = {Duke Math. J.},
volume = {6},
number = {1},
year = {1940},
pages = { 537-561},
language = {en},
url = {http://dml.mathdoc.fr/item/1077492062}
}
Bergman, Stefan. The approximation of functions satisfying a linear partial
differential equation. Duke Math. J., Tome 6 (1940) no. 1, pp. 537-561. http://gdmltest.u-ga.fr/item/1077492062/