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@article{FAA_1984_18_1_a0, author = {V. F. Gaposhkin}, title = {An ergodic theorem for functions of normal operators}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {1--6}, publisher = {mathdoc}, volume = {18}, number = {1}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1984_18_1_a0/} }
V. F. Gaposhkin. An ergodic theorem for functions of normal operators. Funkcionalʹnyj analiz i ego priloženiâ, Tome 18 (1984) no. 1, pp. 1-6. http://geodesic.mathdoc.fr/item/FAA_1984_18_1_a0/