@article{1077491417,
author = {Dunford, Nelson},
title = {A mean ergodic theorem},
journal = {Duke Math. J.},
volume = {5},
number = {1},
year = {1939},
pages = { 635-646},
language = {en},
url = {http://dml.mathdoc.fr/item/1077491417}
}
Dunford, Nelson. A mean ergodic theorem. Duke Math. J., Tome 5 (1939) no. 1, pp. 635-646. http://gdmltest.u-ga.fr/item/1077491417/