@article{SLC_1983_08_a6,
     author = {Klaus Leeb and Giuseppe Pirillo},
     title = {Shuffle-Invariant {Total} {Orders}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {08},
     year = {1983},
     url = {http://geodesic.mathdoc.fr/item/SLC_1983_08_a6/}
}