@article{05672972, title = {Categories, norms and weights.}, journal = {Journal of Homotopy and Related Structures}, volume = {2}, year = {2007}, pages = {171-186}, zbl = {1184.18006}, language = {en}, url = {http://dml.mathdoc.fr/item/05672972} }
Grandis, M. Categories, norms and weights.. Journal of Homotopy and Related Structures, Tome 2 (2007) pp. 171-186. http://gdmltest.u-ga.fr/item/05672972/