%0 Journal Article %A Ivanov D.Yu. %T On one semi-analytical approximation of the normal derivative of the simple layer potential near the boundary of a two-dimensional domain %J Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki %D 2023 %P 434-451 %V 33 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VUU_2023_33_3_a3/ %G ru %F VUU_2023_33_3_a3