@article{DAN_1987_296_4_a11,
     author = {V. V. Kuznetsov and I. V. Pavlova and N. N. Semakov},
     title = {The main geomagnetic field: an estimation of the nondipolity degree},
     journal = {Doklady Akademii Nauk},
     pages = {819--821},
     publisher = {mathdoc},
     volume = {296},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_4_a11/}
}