@article{DAN_1977_237_6_a0,
     author = {E. A. Volkov},
     title = {A difference-analytic method of calculating the potential field on polygons},
     journal = {Doklady Akademii Nauk},
     pages = {1265--1268},
     publisher = {mathdoc},
     volume = {237},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_237_6_a0/}
}