@article{MAN_1988__280_3_164356,
     author = {Helmut H. Schaefer},
     title = {Zur {Stabilit\"at} von {C0-Halbgruppen.}},
     journal = {Mathematische Annalen},
     pages = {161--164},
     publisher = {mathdoc},
     volume = {280},
     number = {3},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MAN_1988__280_3_164356/}
}