@article{SLC_1984_10_a7,
     author = {Wolfgang Woess},
     title = {Einfache {Irrfahrten} auf radialen {B\"amen}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {10},
     year = {1984},
     url = {http://geodesic.mathdoc.fr/item/SLC_1984_10_a7/}
}