TY - JOUR AU - I. Yu. Popov TI - Integral equations in a~model of apertures of zero width JO - Algebra i analiz PY - 1990 SP - 189 EP - 196 VL - 2 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_1990_2_5_a7/ LA - ru ID - AA_1990_2_5_a7 ER -