@article{MZ_1968__103_170891,
     author = {Chong-Yun Chao},
     title = {Some {Characterizations} of {Nilpotent} {Lie} {Algebras.}},
     journal = {Mathematische Zeitschrift},
     pages = {40--42},
     publisher = {mathdoc},
     volume = {103},
     year = {1968},
     zbl = {0178.03603},
     url = {http://geodesic.mathdoc.fr/item/MZ_1968__103_170891/}
}