@article{DAN_1990_313_1_a14,
     author = {A. L. Groshkov and R. R. Kalimulin and G. M. Shalashov and V. A. Shemagin},
     title = {Nonlinear well-to-well sounding by the method of seismic field modulation of acoustic waves},
     journal = {Doklady Akademii Nauk},
     pages = {63--65},
     publisher = {mathdoc},
     volume = {313},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_313_1_a14/}
}