@article{MMO_1961_10_a2,
     author = {M. M. Dzhrbashyan and A. B. Nersesyan},
     title = {Expansions in certain biorthogonal systems and boundary-value problems for differential equations of fractional order},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {89--179},
     publisher = {mathdoc},
     volume = {10},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1961_10_a2/}
}