@article{JRAM_1994__453_153637,
     author = {Ralph J. Bremigan},
     title = {Quotients for algebraic group actions over non-algebraically closed fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {21--48},
     publisher = {mathdoc},
     volume = {453},
     year = {1994},
     zbl = {0808.14040},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__453_153637/}
}