%0 Journal Article %A Ali Azzam %A Erwin Kreyszig %T On Bergman operators of exponential type %J Annales Polonici Mathematici %D 1981 %P 37-48 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-39-1-37-48/ %R 10.4064/ap-39-1-37-48 %G en %F 10_4064_ap_39_1_37_48