@article{IM2_1995_44_1_a6,
     author = {A. S. Shmelev},
     title = {Orbits of the symplectic group on the complete flag variety of a symplectic space},
     journal = {Izvestiya. Mathematics},
     pages = {143--164},
     year = {1995},
     volume = {44},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1995_44_1_a6/}
}