Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1981__91_178007, author = {Karl Petersen and Shizuo Kakutani}, title = {The {Speed} of {Convergence} in {Ergodic} {Theorem.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {11--18}, publisher = {mathdoc}, volume = {91}, year = {1981}, zbl = {0446.28015}, url = {http://geodesic.mathdoc.fr/item/MOMA_1981__91_178007/} }
Karl Petersen; Shizuo Kakutani. The Speed of Convergence in Ergodic Theorem.. Monatshefte für Mathematik, Tome 91 (1981), pp. 11-18. http://geodesic.mathdoc.fr/item/MOMA_1981__91_178007/