TY - JOUR AU - A. G. Prudkovskii TI - Propagation of an oscillation from a point source that moves over the boundary of a~two-dimensional crystal JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1977 SP - 96 EP - 99 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1977_2_a12/ LA - ru ID - IVM_1977_2_a12 ER -