@article{1206127050,
author = {Kang, Seok-Jin and Tanisaki, Toshiyuki},
title = {Universal $R$-matrices and the center of the quantum generalized Kac-Moody algebras},
journal = {Hiroshima Math. J.},
volume = {27},
number = {3},
year = {1997},
pages = { 347-360},
language = {en},
url = {http://dml.mathdoc.fr/item/1206127050}
}
Kang, Seok-Jin; Tanisaki, Toshiyuki. Universal $R$-matrices and the center of the quantum generalized Kac-Moody algebras. Hiroshima Math. J., Tome 27 (1997) no. 3, pp. 347-360. http://gdmltest.u-ga.fr/item/1206127050/