@article{JOLT_2009_19_2_a11,
     author = {Hatem Hamrouni and Salah Souissi},
     title = {Nilpotent {Lie} {Algebras} without {Q-structures}},
     journal = {Journal of Lie Theory},
     pages = {391--394},
     year = {2009},
     volume = {19},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2009_19_2_a11/}
}