@article{IVM_1967_11_a1,
     author = {L. M. Belyakov},
     title = {The approximate determination of the eigenvalues of some operators which depend meromorphically on a~parameter},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {7--10},
     publisher = {mathdoc},
     number = {11},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1967_11_a1/}
}