@article{SLC_1988_19_a1,
     author = {Christian Choffrut},
     title = {A {Remark} on the {Representation} of the {Free} {Partial} {Commutative} {Monoid}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {19},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/SLC_1988_19_a1/}
}