@article{ZVMMF_1964_4_4_a2,
     author = {V. I. Lebedev},
     title = {Difference analogues of orthogonal decompositions, basic differential operators and some boundary problems of mathematical {physics.~II}},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {649--659},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1964_4_4_a2/}
}