%0 Journal Article %A Mehl, Christian %A Ran, André C.M. %A Rodman, Leiba %T Hyponormal matrices and semidefinite invariant subspaces in indefinite inner products %J The electronic journal of linear algebra %D 2004 %P 192-204 %V 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/ELA_2004__11__a6/ %G en %F ELA_2004__11__a6