@article{ZNSL_1981_104_a6,
     author = {V. S. Buldyrev and M. I. Yavor},
     title = {A~combined representation of an acoustic field in the underwater sound channel and asymptotic summation of normal modes},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {66--83},
     publisher = {mathdoc},
     volume = {104},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_104_a6/}
}