@article{JLT_2009_19_2_JLT_2009_19_2_a10,
     author = {A. G. Elashvili and V. G. Kac and E. B. Vinberg },
     title = {On {Exceptional} {Nilpotents} in {Semisimple} {Lie} {Algebras}},
     journal = {Journal of Lie theory},
     pages = {371--39},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/JLT_2009_19_2_JLT_2009_19_2_a10/}
}