@article{DAN_1961_140_3_a18,
     author = {A. N. Tikhonov and N. V. Lipskaya and N. A. Deniskin and N. N. Nikiforova and Z. D. Lomakina},
     title = {Electromagnetic sounding of the earth deep layers},
     journal = {Doklady Akademii Nauk},
     pages = {587--590},
     publisher = {mathdoc},
     volume = {140},
     number = {3},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_3_a18/}
}