@article{ZNSL_1972_27_a2,
     author = {V. M. Babich},
     title = {Method of {D.~Ludwig} and boundary-layer method in the problem of diffraction by a~smooth body},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {17--32},
     publisher = {mathdoc},
     volume = {27},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_27_a2/}
}