@article{GDZPPN002211815,
title = {Quotients for algebraic group actions over non-algebraically closed fields.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {450},
year = {1994},
pages = {21-48},
zbl = {0808.14040},
url = {http://dml.mathdoc.fr/item/GDZPPN002211815}
}
Bremigan, Ralph J. Quotients for algebraic group actions over non-algebraically closed fields.. Journal für die reine und angewandte Mathematik, Tome 450 (1994) pp. 21-48. http://gdmltest.u-ga.fr/item/GDZPPN002211815/