@article{IM2_2001_65_1_a2,
     author = {V. \'E. Kordonskii},
     title = {On the birational classification of algebraic group actions},
     journal = {Izvestiya. Mathematics },
     pages = {57--70},
     publisher = {mathdoc},
     volume = {65},
     number = {1},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2001_65_1_a2/}
}