@article{DE_1982_18_4_a13,
     author = {A. G. Zarubin},
     title = {On the rate of convergence of the {Faedo--Galerkin} method for linear nonstationary equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {639--645},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_4_a13/}
}