@article{IM_1991__103_1_143862,
     author = {Charles A. Weibel},
     title = {Pic is a contracted functor.},
     journal = {Inventiones mathematicae},
     pages = {351--378},
     publisher = {mathdoc},
     volume = {103},
     number = {1},
     year = {1991},
     zbl = {0794.13008},
     url = {http://geodesic.mathdoc.fr/item/IM_1991__103_1_143862/}
}