%0 Journal Article %A A. M. Khazen %T Ball lightning: stationary state, energy supply, conditions of appearance %J Doklady Akademii Nauk %D 1977 %P 288-291 %V 235 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_235_2_a11/ %G ru %F DAN_1977_235_2_a11