@article{AIHPB_1998__34_3_385_0, author = {Fitzsimmons, P. J.}, title = {The quasi-sure ratio ergodic theorem}, journal = {Annales de l'I.H.P. Probabilit\'es et statistiques}, pages = {385--405}, publisher = {Gauthier-Villars}, volume = {34}, number = {3}, year = {1998}, zbl = {0909.60055}, mrnumber = {1625863}, language = {en}, url = {http://archive.numdam.org/item/AIHPB_1998__34_3_385_0/} }