@article{MZM_2023_113_3_a4,
     author = {A. B. Kostin and V. B. Sherstyukov},
     title = {Enveloping of the {Values} of an {Analytic} {Function} {Related} to the {Number~}$e$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {374--391},
     publisher = {mathdoc},
     volume = {113},
     number = {3},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2023_113_3_a4/}
}