%0 Journal Article %A Kieffer, John C. %A Rahe, Maurice %T The Pointwise Ergodic Theorem for Transformations whose Orbits contain or are contained in the Orbits of a Measure-Preserving Transformation %J Canadian journal of mathematics %D 1982 %P 1303-1318 %V 34 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-090-2/ %R 10.4153/CJM-1982-090-2 %F 10_4153_CJM_1982_090_2