@article{DE_1983_19_4_a13,
     author = {Z. M. Narkun},
     title = {Formulas for mutual re-expansion of fundamental solutions of the {Laplace} equation in polar and elliptic coordinates},
     journal = {Differencialʹnye uravneni\^a},
     pages = {654--660},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_4_a13/}
}