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@article{PORMA_1997__54_3_47865, author = {Queir\'o, Jo\~ao Filipe}, title = {Axioms for invariant factors.}, journal = {Portugaliae mathematica}, pages = {263--269}, publisher = {mathdoc}, volume = {54}, number = {3}, year = {1997}, zbl = {0887.15003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1997__54_3_47865/} }
Queiró, João Filipe. Axioms for invariant factors.. Portugaliae mathematica, Tome 54 (1997) no. 3, pp. 263-269. http://geodesic.mathdoc.fr/item/PORMA_1997__54_3_47865/