@article{DE_1994_30_8_a19,
     author = {V. Ya. Yakubov},
     title = {Boundedness of normalized eigenfunctions for the {Sturm--Liouville} problem with minimal constraints on the smoothness of the coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1465--1467},
     publisher = {mathdoc},
     volume = {30},
     number = {8},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_8_a19/}
}