@article{INTO_2021_193_a3,
     author = {A. A. Vladimirov and E. S. Karulina},
     title = {On an a~priori majorant of the least eigenvalues of the {Sturm{\textendash}Liouville} problem},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {25--27},
     year = {2021},
     volume = {193},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2021_193_a3/}
}