@article{ZVMMF_1996_36_7_a4,
     author = {D. Vasile and A. V. Gulin},
     title = {On a difference eigenvalue problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {46--53},
     publisher = {mathdoc},
     volume = {36},
     number = {7},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1996_36_7_a4/}
}