%0 Journal Article %A I. V. Mel'nikova %A A. I. Filinkov %T Integrated semigroups and $C$-semigroups. Well-posedness and regularization of differential-operator problems %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1994 %P 115-155 %V 49 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1994_49_6_a3/ %G en %F RM_1994_49_6_a3