@article{DAN_1975_223_6_a6,
     author = {A. A. Novruzov},
     title = {On the regularity of boundary points for degenerate elliptic equations of second order},
     journal = {Doklady Akademii Nauk},
     pages = {1311--1313},
     publisher = {mathdoc},
     volume = {223},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_223_6_a6/}
}