@article{JLT_2004_14_1_JLT_2004_14_1_a1,
     author = {Y. Kim and K. C. Misra and E. Stitzinger},
     title = {On the {Nilpotency} of {Certain} {Subalgebras} of {Kac-Moody} {Lie} {Algebras}},
     journal = {Journal of Lie theory},
     pages = {011--023},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2004},
     url = {http://geodesic.mathdoc.fr/item/JLT_2004_14_1_JLT_2004_14_1_a1/}
}