@article{ZVMMF_1967_7_6_a17,
     author = {V. S. Ryaben'kii},
     title = {The spectrum of a family of difference operators over functions on a mesh graph},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1392--1398},
     year = {1967},
     volume = {7},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1967_7_6_a17/}
}