@article{DAN_1970_190_6_a18,
     author = {L. P. Vinnik and G. G. Dashkov},
     title = {The {PP} wave generated in nuclear explosion, and decay of longitudinal waves in the upper mantle},
     journal = {Doklady Akademii Nauk},
     pages = {1340--1343},
     year = {1970},
     volume = {190},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_190_6_a18/}
}