@article{GDZPPN002069253,
title = {Root vectors in quantum groups.},
journal = {Commentarii mathematici Helvetici},
volume = {69},
year = {1994},
pages = {612-639},
zbl = {0822.17006},
url = {http://dml.mathdoc.fr/item/GDZPPN002069253}
}
Xi, Nanhua. Root vectors in quantum groups.. Commentarii mathematici Helvetici, Tome 69 (1994) pp. 612-639. http://gdmltest.u-ga.fr/item/GDZPPN002069253/