@article{VMUMM_1982_2_a5,
     author = {E. B. Vinberg},
     title = {Rationality of the field of invariants of a triangular group},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {23--24},
     publisher = {mathdoc},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1982_2_a5/}
}