@article{IM2_2007_71_2_a1,
     author = {M. M. Graev},
     title = {The number of invariant {Einstein} metrics on a homogeneous space, {Newton} polytopes and contractions of {Lie} algebras},
     journal = {Izvestiya. Mathematics},
     pages = {247--306},
     year = {2007},
     volume = {71},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2007_71_2_a1/}
}