@article{SLC_2001-2002_47_a5,
     author = {Vincenzo Marra and Daniele Mundici},
     title = {Combinatorial {Fans,} {Lattice-ordered} {Groups,} and {Their} {Neighbours:} {A} {Short} {Excursion}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {47},
     year = {2001-2002},
     url = {http://geodesic.mathdoc.fr/item/SLC_2001-2002_47_a5/}
}