@article{RM_1976_31_1_a11,
     author = {I. B. Brodskii},
     title = {The invariants of unipotent groups},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1976_31_1_a11/}
}