@article{01230004, title = {Boundary properties of second-order partial derivatives of the Poisson integral for a half-space }, journal = {Georgian Mathematical Journal}, volume = {5}, year = {1998}, pages = {385-400}, doi = {10.1023/A:1022163720259}, zbl = {0939.31006}, language = {en}, url = {http://dml.mathdoc.fr/item/01230004} }
Topuria, S. Boundary properties of second-order partial derivatives of the Poisson integral for a half-space . Georgian Mathematical Journal, Tome 5 (1998) pp. 385-400. doi : 10.1023/A:1022163720259. http://gdmltest.u-ga.fr/item/01230004/