@article{1270041817,
author = {TAKEBAYASHI, Tadayoshi},
title = {Weyl Groups of the Extended Affine Root System $A\_{1}^{(1,1)}$ and the Extended Affine $\mathfrak{sl}(2)$},
journal = {Tokyo J. of Math.},
volume = {21},
number = {2},
year = {1998},
pages = { 299-310},
language = {en},
url = {http://dml.mathdoc.fr/item/1270041817}
}
TAKEBAYASHI, Tadayoshi. Weyl Groups of the Extended Affine Root System $A_{1}^{(1,1)}$ and the Extended Affine $\mathfrak{sl}(2)$. Tokyo J. of Math., Tome 21 (1998) no. 2, pp. 299-310. http://gdmltest.u-ga.fr/item/1270041817/