@article{IM2_1976_10_3_a2,
     author = {\`E. B. Vinberg},
     title = {The {Weyl} group of a~graded {Lie} algebra},
     journal = {Izvestiya. Mathematics},
     pages = {463--495},
     year = {1976},
     volume = {10},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1976_10_3_a2/}
}