Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1958_2_6_a3, author = {D. Gilbarg and J. Serrin}, title = {On isolated singularities of second order elliptic differential equations}, journal = {Matematika}, pages = {63--86}, publisher = {mathdoc}, volume = {2}, number = {6}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1958_2_6_a3/} }
D. Gilbarg; J. Serrin. On isolated singularities of second order elliptic differential equations. Matematika, Tome 2 (1958) no. 6, pp. 63-86. http://geodesic.mathdoc.fr/item/MAT_1958_2_6_a3/