@article{TAC_2014_29_a31,
     author = {Eugenia Cheng and Nick Gurski},
     title = {Iterated icons},
     journal = {Theory and applications of categories},
     pages = {929--977},
     publisher = {mathdoc},
     volume = {29},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2014_29_a31/}
}