@article{IVM_1999_4_a7,
     author = {A. L. Teptin},
     title = {On the oscillation of the spectrum of a~multipoint boundary value problem},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {44--53},
     publisher = {mathdoc},
     number = {4},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1999_4_a7/}
}