@article{MO_2021_100_4_a10,
     author = {T. M. Ivanova and V. B. Sherstyukov},
     title = {On one symmetric inequality},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {69--74},
     publisher = {mathdoc},
     volume = {100},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2021_100_4_a10/}
}