Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1965_9_2_a6, author = {W. Littman and G. Stampacchia and H. F. Weinberger}, title = {Regular points for elliptic equations with discontinuous coefficients}, journal = {Matematika}, pages = {72--97}, publisher = {mathdoc}, volume = {9}, number = {2}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1965_9_2_a6/} }
W. Littman; G. Stampacchia; H. F. Weinberger. Regular points for elliptic equations with discontinuous coefficients. Matematika, Tome 9 (1965) no. 2, pp. 72-97. http://geodesic.mathdoc.fr/item/MAT_1965_9_2_a6/