@article{AA_2010_22_5_a3,
     author = {M. V. Ignat'ev},
     title = {Orthogonal subsets of root systems and the orbit method},
     journal = {Algebra i analiz},
     pages = {104--130},
     publisher = {mathdoc},
     volume = {22},
     number = {5},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2010_22_5_a3/}
}