@article{DAN_1993_329_4_a13,
     author = {A. A. Spivak},
     title = {Aftershocks of the powerful underground explosion in the nonuniform medium},
     journal = {Doklady Akademii Nauk},
     pages = {435--437},
     publisher = {mathdoc},
     volume = {329},
     number = {4},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_329_4_a13/}
}