@article{SF_1990__40_1_135014,
     author = {C. Choffrut},
     title = {A remark on the representation of trace monoids.},
     journal = {Semigroup forum},
     pages = {143--152},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1990},
     zbl = {0693.20064},
     url = {http://geodesic.mathdoc.fr/item/SF_1990__40_1_135014/}
}