@article{MZM_1974_15_1_a14,
     author = {A. L. Treskunov},
     title = {Modulus of continuity of solutions of second-order elliptic equations on a~plane},
     journal = {Matemati\v{c}eskie zametki},
     pages = {139--148},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_1_a14/}
}