%0 Journal Article %A Bruce A. Barnes %T Closed operators affiliated with a Banach algebra of operators %J Studia Mathematica %D 1991 %P 215-240 %V 101 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-101-3-215-240/ %R 10.4064/sm-101-3-215-240 %G en %F 10_4064_sm_101_3_215_240