@article{MMO_1956_5_a3,
     author = {Yu. M. Berezanskii},
     title = {Expansion according to eigenfunction of a partial difference equation of order two},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {203--268},
     publisher = {mathdoc},
     volume = {5},
     year = {1956},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1956_5_a3/}
}