@article{JOLT_2004_14_2_a13,
     author = {Z. Reichstein and N. Vonessen},
     title = {Stable {Affine} {Models} for {Algebraic} {Group} {Actions

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     journal = {Journal of Lie Theory},
     pages = {563--568},
     year = {2004},
     volume = {14},
     number = {2},
     zbl = {1060.14067},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2004_14_2_a13/}
}