Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1991_200_a28, author = {I. V. Skrypnik}, title = {Regularity of a~boundary point for a~quasi-linear elliptic equation of higher order}, journal = {Informatics and Automation}, pages = {310--321}, publisher = {mathdoc}, volume = {200}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1991_200_a28/} }
I. V. Skrypnik. Regularity of a~boundary point for a~quasi-linear elliptic equation of higher order. Informatics and Automation, Number theory, algebra, analysis and their applications, Tome 200 (1991), pp. 310-321. http://geodesic.mathdoc.fr/item/TRSPY_1991_200_a28/