@article{SLC_2017-2018_77_a4,
     author = {Gerhard R\"ohrle},
     title = {Divisionally free {Restrictions} of {Reflection} {Arrangements}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {77},
     year = {2017-2018},
     url = {http://geodesic.mathdoc.fr/item/SLC_2017-2018_77_a4/}
}