@article{DE_1979_15_12_a8,
     author = {D. I. Kristev},
     title = {The geometry of the solutions of elliptic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2174--2182},
     publisher = {mathdoc},
     volume = {15},
     number = {12},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_12_a8/}
}