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@article{PORMA_1997__54_3_47853, author = {Sommen, F.}, title = {An algebra of abstract vector variables.}, journal = {Portugaliae mathematica}, pages = {287--310}, publisher = {mathdoc}, volume = {54}, number = {3}, year = {1997}, zbl = {0886.15037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1997__54_3_47853/} }
Sommen, F. An algebra of abstract vector variables.. Portugaliae mathematica, Tome 54 (1997) no. 3, pp. 287-310. http://geodesic.mathdoc.fr/item/PORMA_1997__54_3_47853/