TY - JOUR AU - N. E. Tovmasyan TI - On the theory of singular integral equations JO - Differencialʹnye uravneniâ PY - 1967 SP - 69 EP - 80 VL - 3 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1967_3_1_a6/ LA - ru ID - DE_1967_3_1_a6 ER -