@article{DE_1992_28_9_a27,
     author = {M. B. Iskenderova},
     title = {Abel summability of $n$-fold expansions in root functions of boundary value problems and convolution operators},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1647--1650},
     publisher = {mathdoc},
     volume = {28},
     number = {9},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_9_a27/}
}