@article{JRAM_1981__326_152372,
     author = {Stephen Donkin},
     title = {Polycyclic groups, {Lie} algebras and algebraic groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {104--123},
     publisher = {mathdoc},
     volume = {326},
     year = {1981},
     zbl = {0453.20028},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1981__326_152372/}
}