@article{VTPMK_2021_3_a4,
     author = {O. E. Baranova},
     title = {Solving one extreme problem in a class of locally single-leaf functions},
     journal = {Vestnik Tverskogo gosudarstvennogo universiteta. Seri\^a Prikladna\^a matematika},
     pages = {58--69},
     year = {2021},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTPMK_2021_3_a4/}
}