@article{DE_1998_34_10_a17,
     author = {V. A. Vinokurov and V. A. Sadovnichii},
     title = {Arbitrary-order asymptotics of the eigenvalues and eigenfunctions of the {Sturm--Liouville} boundary value problem on an interval with integrable potential},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1423--1426},
     publisher = {mathdoc},
     volume = {34},
     number = {10},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_10_a17/}
}