%0 Journal Article %A T. Yu. Semenova %T Estimate for the least positive root of the harmonic function in a circle decomposed into sine series %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2023 %P 15-23 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2023_3_a2/ %G ru %F VMUMM_2023_3_a2