%0 Journal Article %A A. A. Titova %T On the shape of the free-surface problem of an ideal incompressible fluid flow with a singular sink at the top of a triangular ledge at the bottom %J Sibirskie èlektronnye matematičeskie izvestiâ %D 2021 %P 207-236 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SEMR_2021_18_1_a25/ %G ru %F SEMR_2021_18_1_a25