@article{GDZPPN002433087, title = {Euler Characteristic and the Class of Unit in K-theory.}, journal = {Mathematische Zeitschrift}, volume = {194}, year = {1987}, pages = {237-244}, zbl = {0594.57010}, url = {http://dml.mathdoc.fr/item/GDZPPN002433087} }
Natsume, Toshikazu. Euler Characteristic and the Class of Unit in K-theory.. Mathematische Zeitschrift, Tome 194 (1987) pp. 237-244. http://gdmltest.u-ga.fr/item/GDZPPN002433087/