@article{GDZPPN002339102,
title = {Generalized Kac-Moody algebras and the modular function j.},
journal = {Mathematische Annalen},
volume = {300},
year = {1994},
pages = {373-384},
zbl = {0787.17022},
url = {http://dml.mathdoc.fr/item/GDZPPN002339102}
}
Kang, Seok-Jin. Generalized Kac-Moody algebras and the modular function j.. Mathematische Annalen, Tome 300 (1994) pp. 373-384. http://gdmltest.u-ga.fr/item/GDZPPN002339102/