@article{DAN_1960_132_4_a3,
     author = {M. M. Dzhrbashyan and A. B. Nersesyan},
     title = {Expansion in special biorthogonal systems and boundary value problems for fractional-order differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {747--750},
     publisher = {mathdoc},
     volume = {132},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_4_a3/}
}