@article{DE_1989_25_2_a17,
     author = {I. K. Lifanov and L. N. Poltavskii},
     title = {The generalized {Hilbert} operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {300--306},
     publisher = {mathdoc},
     volume = {25},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_2_a17/}
}