no. 1
Invariant theory for linear algebraic groups II (char k arbitrary)
Compositio Mathematica, Tome 68 (1988) no. 1, pp. 23-29. 
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     author = {Fauntleroy, A.},
     title = {Invariant theory for linear algebraic groups {II} (char k arbitrary)},
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     pages = {23--29},
     publisher = {Kluwer Academic Publishers},
     volume = {68},
     number = {1},
     year = {1988},
     mrnumber = {962502},
     zbl = {0683.14011},
     language = {en},
     url = {http://www.numdam.org/item/CM_1988__68_1_23_0/}
}
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Fauntleroy, A. Invariant theory for linear algebraic groups II (char k arbitrary). Compositio Mathematica, Tome 68 (1988) no. 1, pp. 23-29. http://www.numdam.org/item/CM_1988__68_1_23_0/

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