%0 Journal Article %A Farsi, Carla %A Watling, Neil %T Abstract Characterizationsof Fixed Point Sub Algebrasof the Rotation Algebra %J Canadian journal of mathematics %D 1994 %P 1211-1237 %V 46 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1994-069-4/ %R 10.4153/CJM-1994-069-4 %F 10_4153_CJM_1994_069_4