%0 Journal Article %A J. Voigt %T Stability of the essential type of strongly continuous semigroups %J Informatics and Automation %D 1994 %P 469-477 %V 203 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1994_203_a36/ %G en %F TRSPY_1994_203_a36