@article{SLC_2018_80B_a3,
     author = {Henri M\"uhle},
     title = {On the {Lattice} {Property} of {Shard} {Orders}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2018},
     volume = {80B},
     url = {http://geodesic.mathdoc.fr/item/SLC_2018_80B_a3/}
}