@article{DE_1983_19_4_a20,
     author = {I. N. Bogaenko and M. V. Boychuk},
     title = {Questions concerning the improvement of the convergence of series in the solution of second-order equations of parabolic type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {694--697},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_4_a20/}
}