%0 Journal Article %A N. N. Sirota %A N. M. Olekhnovich %T The distribution of electron density among $3d$-shell electrons which account for the ferromagnetism of nickel, cobalt and iron %J Doklady Akademii Nauk %D 1961 %P 844-846 %V 139 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a19/ %G ru %F DAN_1961_139_4_a19