@article{10_1017_fms_2017_19, author = {GERGELY B\'ERCZI and FRANCES KIRWAN}, title = {GRADED {UNIPOTENT} {GROUPS} {AND} {GROSSHANS} {THEORY}}, journal = {Forum of Mathematics, Sigma}, publisher = {mathdoc}, volume = {5}, year = {2017}, doi = {10.1017/fms.2017.19}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.1017/fms.2017.19/} }