@article{DE_1982_18_10_a4,
     author = {I. S. Lomov},
     title = {Some properties of eigen- and associated functions of the {Sturm--Liouville} operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1684--1694},
     publisher = {mathdoc},
     volume = {18},
     number = {10},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_10_a4/}
}