@article{1250518891,
author = {Kono, Akira and Tokunaga, Ken-ichi},
title = {A topological proof of Bott periodicity theorem and a characterization of $BU$},
journal = {J. Math. Kyoto Univ.},
volume = {34},
number = {4},
year = {1994},
pages = { 873-880},
language = {en},
url = {http://dml.mathdoc.fr/item/1250518891}
}
Kono, Akira; Tokunaga, Ken-ichi. A topological proof of Bott periodicity theorem and a characterization of $BU$. J. Math. Kyoto Univ., Tome 34 (1994) no. 4, pp. 873-880. http://gdmltest.u-ga.fr/item/1250518891/