@article{IVM_2023_1_a0,
     author = {M. Yu. Vatolkin},
     title = {On the spectrum of a quasidifferential boundary value problem of the second order},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--24},
     publisher = {mathdoc},
     number = {1},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2023_1_a0/}
}