@article{DAN_1975_222_3_a7,
     author = {S. S. Grigoryan and L. S. Evterev},
     title = {The action of powerful explosion on the surface of rock semispace},
     journal = {Doklady Akademii Nauk},
     pages = {544--547},
     publisher = {mathdoc},
     volume = {222},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_222_3_a7/}
}