@article{DAN_1974_218_6_a13,
     author = {L. M. Barkovskii and F. I. Fedorov},
     title = {Impedance tensor and the elastic wave passage through plane-stratified anisotropic media},
     journal = {Doklady Akademii Nauk},
     pages = {1313--1316},
     publisher = {mathdoc},
     volume = {218},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_6_a13/}
}