@article{DAN_1979_248_3_a14,
     author = {L. P. Vinnik and N. G. Mikhailova and R. A. Avetisyan},
     title = {Analysis of observations of the mantle $PS$ waves},
     journal = {Doklady Akademii Nauk},
     pages = {573--576},
     publisher = {mathdoc},
     volume = {248},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_248_3_a14/}
}