%0 Journal Article %A A. G. Prudkovskii %T Propagation of an oscillation from a point source that moves over the boundary of a~two-dimensional crystal %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1977 %P 96-99 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1977_2_a12/ %G ru %F IVM_1977_2_a12