@article{SM_2014_205_9_a0,
     author = {R. S. Avdeev and A. V. Petukhov},
     title = {Spherical actions on flag varieties},
     journal = {Sbornik. Mathematics},
     pages = {1223--1263},
     publisher = {mathdoc},
     volume = {205},
     number = {9},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2014_205_9_a0/}
}