@article{ZNSL_1980_99_a9,
     author = {L. A. Molotkov and U. Baimagambetov},
     title = {On the investigation of the roots of dispersion equation for layered transversal-isotropic medium},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {104--122},
     publisher = {mathdoc},
     volume = {99},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_99_a9/}
}