@article{DE_1982_18_4_a18,
     author = {V. G. Cherednichenko},
     title = {A problem on the conjugation of harmonic functions and its inverse},
     journal = {Differencialʹnye uravneni\^a},
     pages = {682--689},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_4_a18/}
}