@article{MZM_1974_15_2_a14,
     author = {V. I. Danilov},
     title = {Nonsimplicity of the group of unimodular automorphisms of the affine plane},
     journal = {Matemati\v{c}eskie zametki},
     pages = {289--293},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a14/}
}