@article{DE_1976_12_7_a1,
     author = {K. Kh. Boimatov},
     title = {The domain of definition of a {Sturm{\textendash}Liouville} operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1151--1160},
     year = {1976},
     volume = {12},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_7_a1/}
}