%0 Journal Article %A L. V. Ershov %T Manifestation of pressure from overlying rock in horizontal excavations %J Doklady Akademii Nauk %D 1962 %P 298-300 %V 145 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_145_2_a19/ %G ru %F DAN_1962_145_2_a19