@article{FAA_2020_54_4_a6,
     author = {N. S. Ustinov},
     title = {On the {Constancy} of the {Extremal} {Function} in the {Embedding} {Theorem} of {Fractional} {Order}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {85--97},
     publisher = {mathdoc},
     volume = {54},
     number = {4},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2020_54_4_a6/}
}