@article{DE_1999_35_12_a10,
     author = {M. R. Faradzheva},
     title = {$R$-identity of second-order elliptic operators with continuous coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1684--1690},
     publisher = {mathdoc},
     volume = {35},
     number = {12},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_12_a10/}
}