@article{JLT_2015_25_2_JLT_2015_25_2_a12,
     author = {Z. Zhou},
     title = {Rigidity of {Formal} {Characters} of {Lie} algebras of type {A}},
     journal = {Journal of Lie theory},
     pages = {553--558},
     year = {2015},
     volume = {25},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JLT_2015_25_2_JLT_2015_25_2_a12/}
}