@article{IVM_1969_8_a7,
     author = {V. A. Petrova},
     title = {Solution of a~plane electrostatic problem for two contours},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {52--63},
     publisher = {mathdoc},
     number = {8},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1969_8_a7/}
}