@article{VKAM_2010_1_a3,
     author = {G. M. Vodinchar and L. K. Kruteva},
     title = {Basic systems for the geomagnetic field},
     journal = {Vestnik KRAUNC. Fiziko-matemati\v{c}eskie nauki},
     pages = {24--30},
     publisher = {mathdoc},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VKAM_2010_1_a3/}
}