%0 Journal Article %A Scarowsky, Manny %A Boyarsky, Abraham %T A Practical Two-Dimensional Ergodic Theorem %J Canadian mathematical bulletin %D 1986 %P 352-357 %V 29 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-054-x/ %R 10.4153/CMB-1986-054-x %F 10_4153_CMB_1986_054_x