@article{TAC_2011_25_a3,
     author = {Andrew Stacey},
     title = {Comparative smootheology},
     journal = {Theory and applications of categories},
     pages = {64--117},
     publisher = {mathdoc},
     volume = {25},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2011_25_a3/}
}