%0 Journal Article %A O. E. Baranova %T Solving one extreme problem in a class of locally single-leaf functions %J Vestnik Tverskogo gosudarstvennogo universiteta. Seriâ Prikladnaâ matematika %D 2021 %P 58-69 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTPMK_2021_3_a4/ %G ru %F VTPMK_2021_3_a4