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@article{DE_1994_30_2_a19, author = {S. I. Piskarev}, title = {On the approximation of perturbed $C_0$-semigroups}, journal = {Differencialʹnye uravneni\^a}, pages = {339--341}, publisher = {mathdoc}, volume = {30}, number = {2}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1994_30_2_a19/} }
S. I. Piskarev. On the approximation of perturbed $C_0$-semigroups. Differencialʹnye uravneniâ, Tome 30 (1994) no. 2, pp. 339-341. http://geodesic.mathdoc.fr/item/DE_1994_30_2_a19/