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@article{MZM_1984_35_3_a8, author = {V. F. Gaposhkin}, title = {Tauberian ergodic theorem for normal contraction operators}, journal = {Matemati\v{c}eskie zametki}, pages = {397--404}, publisher = {mathdoc}, volume = {35}, number = {3}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1984_35_3_a8/} }
V. F. Gaposhkin. Tauberian ergodic theorem for normal contraction operators. Matematičeskie zametki, Tome 35 (1984) no. 3, pp. 397-404. http://geodesic.mathdoc.fr/item/MZM_1984_35_3_a8/