@article{DAN_1984_277_4_a15,
     author = {M. S. Zhdanov},
     title = {Representation of three-dimensional gravitational and magnetic},
     journal = {Doklady Akademii Nauk},
     pages = {829--833},
     year = {1984},
     volume = {277},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_277_4_a15/}
}