@article{MZ_1965__90_170486,
     author = {Ebbe Thue Poulsen},
     title = {Evolutionsgleichungen in {Banach-R\"aumen.}},
     journal = {Mathematische Zeitschrift},
     pages = {286--309},
     publisher = {mathdoc},
     volume = {90},
     year = {1965},
     zbl = {0141.13102},
     url = {http://geodesic.mathdoc.fr/item/MZ_1965__90_170486/}
}