@article{DAN_1972_207_2_a22,
     author = {N. P. Lopatina and V. Z. Ryaboy},
     title = {Velocity and density heterogeneities of the upper part of the mantle on the {USSR} territory},
     journal = {Doklady Akademii Nauk},
     pages = {337--340},
     publisher = {mathdoc},
     volume = {207},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_207_2_a22/}
}