@article{DAN_1969_185_3_a18,
     author = {V. P. Valyus and V. I. Keilis-Borok and A. L. Levshin},
     title = {Determination of wave velocity cross-section through {Europe's} upper mantle},
     journal = {Doklady Akademii Nauk},
     pages = {564--567},
     publisher = {mathdoc},
     volume = {185},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_3_a18/}
}