@article{MZM_1981_30_3_a2,
     author = {I. T. Mamedov},
     title = {Behavior near the boundary of the solutions of degenerate second-order elliptic equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {343--352},
     year = {1981},
     volume = {30},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_30_3_a2/}
}