@article{SM_2017_208_5_a4,
     author = {E. V. Ponomareva},
     title = {Invariants of the {Cox} rings of double flag varieties of low complexity for exceptional groups},
     journal = {Sbornik. Mathematics},
     pages = {707--742},
     publisher = {mathdoc},
     volume = {208},
     number = {5},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2017_208_5_a4/}
}