@article{DE_2000_36_6_a20,
     author = {K. B. Sabitov and F. Kh. Mukminov},
     title = {The sign of the conormal derivative of a solution to a degenerating elliptic equation near a point of maximum},
     journal = {Differencialʹnye uravneni\^a},
     pages = {844--847},
     publisher = {mathdoc},
     volume = {36},
     number = {6},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_6_a20/}
}