@article{ZNSL_1978_78_a9,
     author = {K. K. Lavrent'ev},
     title = {Problem of the scattering of nonstationary waves by a one-dimensional obstacle},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {134--137},
     publisher = {mathdoc},
     volume = {78},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1978_78_a9/}
}