@article{DAN_1965_164_1_a6,
     author = {I. A. Zhigulin},
     title = {Certain invariants of the groups of triangular-unit matrices in a space adjoint to the space of its {Lie} algebra},
     journal = {Doklady Akademii Nauk},
     pages = {32--35},
     publisher = {mathdoc},
     volume = {164},
     number = {1},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_164_1_a6/}
}