@article{IVM_1991_9_a14,
     author = {V. G. Prikazchikov and Zh. P. Allanazarov},
     title = {The accuracy of a~discrete spectral problem with a~mixed derivative},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {83--85},
     publisher = {mathdoc},
     number = {9},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_9_a14/}
}