%0 Journal Article %A Kunkel, Peter %A Mehrmann, Volker %T Formal adjoints of linear DAE operators and their role in optimal control %J The electronic journal of linear algebra %D 2011 %P 672-693 %V 22 %I mathdoc %U http://geodesic.mathdoc.fr/item/ELA_2011__22__a33/ %G en %F ELA_2011__22__a33