@article{GDZPPN002178877,
title = {On the Ergodic Theorem for Positive Linear Operators.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {203},
year = {1960},
pages = {101-106},
zbl = {0103.33801},
url = {http://dml.mathdoc.fr/item/GDZPPN002178877}
}
Hopf, Eberhard. On the Ergodic Theorem for Positive Linear Operators.. Journal für die reine und angewandte Mathematik, Tome 203 (1960) pp. 101-106. http://gdmltest.u-ga.fr/item/GDZPPN002178877/