@article{DAN_1962_145_2_a19,
     author = {L. V. Ershov},
     title = {Manifestation of pressure from overlying rock in horizontal excavations},
     journal = {Doklady Akademii Nauk},
     pages = {298--300},
     publisher = {mathdoc},
     volume = {145},
     number = {2},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_2_a19/}
}