@article{DE_1982_18_10_a19,
     author = {I. N. Bogaenko and M. V. Boychuk},
     title = {Questions of improving the convergence of series in the solution of equations of elliptic type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1817--1819},
     publisher = {mathdoc},
     volume = {18},
     number = {10},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_10_a19/}
}