@article{CMH_1985__60_140027,
     author = {Hanspeter Kraft and Vladimir L. Popov},
     title = {Semisimple group actions on the three dimensional affine space are linear.},
     journal = {Commentarii mathematici Helvetici},
     pages = {466--479},
     publisher = {mathdoc},
     volume = {60},
     year = {1985},
     zbl = {0645.14020},
     url = {http://geodesic.mathdoc.fr/item/CMH_1985__60_140027/}
}