%0 Journal Article %A Krzysztof M. Frączek %T Cyclic space isomorphism of unitary operators %J Studia Mathematica %D 1997 %P 259-267 %V 124 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-124-3-259-267/ %R 10.4064/sm-124-3-259-267 %G en %F 10_4064_sm_124_3_259_267