@article{MMO_1983_46_a4,
     author = {E. M. Landis},
     title = {The structure of nonessential sets with respect to the {Dirichlet} problem for second-order elliptic operators with discontinuous coefficients},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {124--135},
     publisher = {mathdoc},
     volume = {46},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1983_46_a4/}
}