%0 Journal Article %A Willems, Jan C. %T Open dynamical systems and their control %J Documenta mathematica %D 1998 %P 697-706 %V ICM Berlin 1998, Vol. III %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_1998__S9__a11/ %G en %F DOCMA_1998__S9__a11