%0 Journal Article %A L. A. Manakova %A S. P. Ionov %T Ordering of localized electron pairs in crystals with variable valency %J Doklady Akademii Nauk %D 1982 %P 611-614 %V 265 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1982_265_3_a25/ %G ru %F DAN_1982_265_3_a25