@article{BSMF_2002__130_2_233_0,
     author = {Chapoton, Fr\'ed\'eric},
     title = {Op\'erades diff\'erentielles gradu\'ees sur les simplexes et les permuto\`edres},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {233--251},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {130},
     number = {2},
     year = {2002},
     doi = {10.24033/bsmf.2419},
     mrnumber = {1924542},
     zbl = {1044.18007},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2419/}
}