%0 Journal Article %A V. A. Zheltigovskii %A A. M. Sadovskii %A R. V. Simpson %T On the relation of horizontal gradients of parameter $S=H+10B$ and seismicity %J Doklady Akademii Nauk %D 1991 %P 82-87 %V 318 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_318_1_a18/ %G ru %F DAN_1991_318_1_a18