%0 Journal Article %A D. A. Bochvar %A N. P. Gambaryan %T A measure of the delocalization of an electron in an atomic or molecular system. %J Doklady Akademii Nauk %D 1960 %P 532-534 %V 131 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_131_3_a17/ %G ru %F DAN_1960_131_3_a17