%0 Journal Article %A Bernhard Steinig %T On the essential maximality of linear operators in a Hilbert space %J Annales Fennici Mathematici %D 1991 %P 199-210 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1991.1627/ %R 10.5186/aasfm.1991.1627 %G en %F AFM_1991_16_1_a16