@article{ZVMMF_1982_22_3_a15,
     author = {V. G. Prikazchikov},
     title = {The difference problem for eigenvalues of a second-order elliptic operator with mixed boundary conditions},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {655--662},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1982_22_3_a15/}
}