@article{1077472669,
author = {Bergman, Stefan},
title = {Solutions of linear partial differential equations of the fourth order},
journal = {Duke Math. J.},
volume = {11},
number = {1},
year = {1944},
pages = { 617-649},
language = {en},
url = {http://dml.mathdoc.fr/item/1077472669}
}
Bergman, Stefan. Solutions of linear partial differential equations of the fourth order. Duke Math. J., Tome 11 (1944) no. 1, pp. 617-649. http://gdmltest.u-ga.fr/item/1077472669/