@article{DE_2003_39_5_a2,
     author = {I. S. Lomov},
     title = {Integral {Representations} of a {Partial} {Sum} of a {Biorthogonal} {Series} for {Higher-Order} {Differential} {Operators}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {602--611},
     publisher = {mathdoc},
     volume = {39},
     number = {5},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_5_a2/}
}