TY - JOUR AU - Ivanov D.Yu. TI - On one semi-analytical approximation of the normal derivative of the simple layer potential near the boundary of a two-dimensional domain JO - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki PY - 2023 SP - 434 EP - 451 VL - 33 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VUU_2023_33_3_a3/ LA - ru ID - VUU_2023_33_3_a3 ER -