%0 Journal Article %A I. G. Fikhtengol'ts %T On the gravitational pressure in the Fridman--Lobachevsky space %J Doklady Akademii Nauk %D 1970 %P 1028-1030 %V 191 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_191_5_a18/ %G ru %F DAN_1970_191_5_a18