@article{ZNSL_1980_99_a10,
     author = {D. K. Ozerov},
     title = {The estimation of the velocity gradient of elastic waves by the interfered refracted wave},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {123--126},
     publisher = {mathdoc},
     volume = {99},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_99_a10/}
}