@article{SM_1988_61_1_a13,
     author = {M. M. Gekhtman},
     title = {On the asymptotic behavior of the normalized eigenfunctions of the {Sturm-Liouville} problem on a~finite interval},
     journal = {Sbornik. Mathematics},
     pages = {185--199},
     publisher = {mathdoc},
     volume = {61},
     number = {1},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1988_61_1_a13/}
}