@article{VSGU_2015_6_a16,
     author = {M. Yu. Telnova},
     title = {On the upper estimates for the first eigenvalue of a {Sturm{\textendash}Liouville} problem with a weighted integral condition},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {124--129},
     year = {2015},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2015_6_a16/}
}