@article{DAN_1969_188_6_a1,
     author = {I. B. Brodskii},
     title = {The invariants of the group of triangular matrices of order $n$ with ones on the principal diagonal},
     journal = {Doklady Akademii Nauk},
     pages = {1210--1213},
     publisher = {mathdoc},
     volume = {188},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_188_6_a1/}
}