@article{ZNSL_1981_104_a9,
     author = {V. I. Ivanov},
     title = {Calculation of corrections to the {Fock's} asymptotic formula for the wave field in a~neighbourhood of surfaces of
},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {102--110},
     publisher = {mathdoc},
     volume = {104},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_104_a9/}
}