@article{MO_2023_106_2_a3,
     author = {N. V. Ilyushechkin},
     title = {A simple proof of the inequality $ e < 3 $},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {17--19},
     publisher = {mathdoc},
     volume = {106},
     number = {2},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2023_106_2_a3/}
}