@article{AA_1998_10_4_a3,
     author = {E. V. Dybkova},
     title = {Form nets and the lattice of upper-diagonal subgroups of the symplectic group over a~field of characteristic~$2$},
     journal = {Algebra i analiz},
     pages = {113--129},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1998_10_4_a3/}
}