@article{1183523588, author = {Blum, J. R. and Hanson, D. L.}, title = {On the mean ergodic theorem for subsequences}, journal = {Bull. Amer. Math. Soc.}, volume = {66}, number = {6}, year = {1960}, pages = { 308-311}, language = {en}, url = {http://dml.mathdoc.fr/item/1183523588} }
Blum, J. R.; Hanson, D. L. On the mean ergodic theorem for subsequences. Bull. Amer. Math. Soc., Tome 66 (1960) no. 6, pp. 308-311. http://gdmltest.u-ga.fr/item/1183523588/