TY - JOUR AU - È. I. Veliev TI - On the theory of two-dimensional wave diffraction by a polygonal JO - Doklady Akademii Nauk PY - 1985 SP - 319 EP - 323 VL - 285 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1985_285_2_a13/ LA - ru ID - DAN_1985_285_2_a13 ER -