@article{KUKTF_1977_1_1_a0,
     author = {E. A. Begovatov},
     title = {Spectral properties of a {Sturm{\textendash}Liouville} operator problem in a~noncylindrical domain},
     journal = {Konstruktivnaya Teoriya Funktsii i Funktsional'nyi Analiz},
     pages = {3--6},
     year = {1977},
     volume = {1},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKTF_1977_1_1_a0/}
}