@article{IVM_1968_11_a14,
     author = {B. D. Han'zov},
     title = {The {Ritz} method in the eigenvalue problem for discrete systems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {135--139},
     publisher = {mathdoc},
     number = {11},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1968_11_a14/}
}