%0 Journal Article %A Xia, Jingbo %T Singular Integral Operators and Essential Commutativity on the Sphere %J Canadian journal of mathematics %D 2010 %P 889-913 %V 62 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2010-038-x/ %R 10.4153/CJM-2010-038-x %F 10_4153_CJM_2010_038_x