@article{SF_1997__54_2_135523,
     author = {A. Bobrowski},
     title = {On the generation of non-continuous semigroups.},
     journal = {Semigroup forum},
     pages = {237--252},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {1997},
     zbl = {0873.47025},
     url = {http://geodesic.mathdoc.fr/item/SF_1997__54_2_135523/}
}