%0 Journal Article %A Schôichi Ôta %T A quasi-affine transform of an unbounded operator %J Studia Mathematica %D 1994 %P 279-284 %V 112 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-112-3-279-284/ %R 10.4064/sm-112-3-279-284 %G en %F 10_4064_sm_112_3_279_284