@article{RSMUP_1975__54__271_0, author = {Grandis, Marco}, title = {Sym\'etrisations de cat\'egories - {I} : g\'en\'eralit\'es}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, pages = {271--310}, publisher = {Seminario Matematico of the University of Padua}, volume = {54}, year = {1975}, mrnumber = {450362}, zbl = {0355.18005}, language = {fr}, url = {http://www.numdam.org/item/RSMUP_1975__54__271_0/} }