%0 Journal Article %A Sungeun Jung %A Eungil Ko %A Mee-Jung Lee %T On class A operators %J Studia Mathematica %D 2010 %P 249-260 %V 198 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm198-3-4/ %R 10.4064/sm198-3-4 %G en %F 10_4064_sm198_3_4