@article{10_1017_S0017089513000530,
     author = {LORENZ, MARTIN},
     title = {RATIONAL {GROUP} {ACTIONS} {ON} {AFFINE} {PI-ALGEBRAS}},
     journal = {Glasgow mathematical journal},
     pages = {101--111},
     year = {2013},
     volume = {55},
     number = {A},
     doi = {10.1017/S0017089513000530},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089513000530/}
}