@article{DE_1969_5_3_a7,
     author = {M. A. Veliev},
     title = {The stability of the {Bubnov{\textendash}Galerkin} method for first order equations with variable coefficients in {Hilbert} space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {479--487},
     year = {1969},
     volume = {5},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_3_a7/}
}