@article{FAA_1969_3_2_a1,
     author = {I. B. Brodskii},
     title = {On orbits of unipotent groups},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {19--23},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1969_3_2_a1/}
}