@article{DOCMA_2003__8__a8,
     author = {Berhuy, Gr\'egory and Favi, Giordano},
     title = {Essential dimension: {A} functorial point of view (after {A.} {Merkurjev)}},
     journal = {Documenta mathematica},
     pages = {279--330},
     publisher = {mathdoc},
     volume = {8},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2003__8__a8/}
}