@article{IM2_1990_34_2_a9,
     author = {V. I. Chernousov},
     title = {On projective simplicity of certain groups of rational points over algebraic number fields},
     journal = {Izvestiya. Mathematics },
     pages = {409--423},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1990_34_2_a9/}
}