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@article{MZ_1987__194_173830, author = {Toshikazu Natsume}, title = {Euler {Characteristic} and the {Class} of {Unit} in {K-theory.}}, journal = {Mathematische Zeitschrift}, pages = {237--244}, publisher = {mathdoc}, volume = {194}, year = {1987}, zbl = {0594.57010}, url = {http://geodesic.mathdoc.fr/item/MZ_1987__194_173830/} }
Toshikazu Natsume. Euler Characteristic and the Class of Unit in K-theory.. Mathematische Zeitschrift, Tome 194 (1987), pp. 237-244. http://geodesic.mathdoc.fr/item/MZ_1987__194_173830/