Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1981_15_1_a1, author = {V. F. Gaposhkin}, title = {Individual ergodic theorem for normal operators in $L_2$}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {18--22}, publisher = {mathdoc}, volume = {15}, number = {1}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1981_15_1_a1/} }
V. F. Gaposhkin. Individual ergodic theorem for normal operators in $L_2$. Funkcionalʹnyj analiz i ego priloženiâ, Tome 15 (1981) no. 1, pp. 18-22. http://geodesic.mathdoc.fr/item/FAA_1981_15_1_a1/