%0 Journal Article %A V. K. Mel'nikov %T Lines of force of a magnetic field %J Doklady Akademii Nauk %D 1962 %P 747-750 %V 144 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_144_4_a14/ %G ru %F DAN_1962_144_4_a14