@article{DE_1969_5_5_a14,
     author = {\`E. D. Pergamentseva},
     title = {Certain plane problems of electrostatics which are connected with the conformal mapping of circular quadrangles},
     journal = {Differencialʹnye uravneni\^a},
     pages = {935--944},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_5_a14/}
}