@article{ZNSL_1998_250_a19,
     author = {A. V. Shanin},
     title = {Exitation of the wave field in the triangular domain with impedance boundary conditions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {300--318},
     year = {1998},
     volume = {250},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1998_250_a19/}
}