@article{TAC_2001_8_a7,
     author = {Marco Grandis},
     title = {Finite sets and symmetric simplicial sets},
     journal = {Theory and applications of categories},
     pages = {244--252},
     publisher = {mathdoc},
     volume = {8},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2001_8_a7/}
}