@article{JLT_2022_32_4_JLT_2022_32_4_a2,
     author = {H. Ben Messaoud and M. Layouni},
     title = {On {Gradations} of {Decomposable} {Kac-Moody} {Lie} {Algebras} by {Kac-Moody} {Root} {Systems}},
     journal = {Journal of Lie theory},
     pages = {937--971},
     year = {2022},
     volume = {32},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/JLT_2022_32_4_JLT_2022_32_4_a2/}
}