no. 2
A simultaneous Frobenius splitting for closures of conjugacy classes of nilpotent matrices
Compositio Mathematica, Tome 84 (1992) no. 2, pp. 211-221 
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     author = {Mehta, V. B. and Van der Kallen, Wilberd},
     title = {A simultaneous {Frobenius} splitting for closures of conjugacy classes of nilpotent matrices},
     journal = {Compositio Mathematica},
     pages = {211--221},
     year = {1992},
     publisher = {Kluwer Academic Publishers},
     volume = {84},
     number = {2},
     mrnumber = {1183569},
     zbl = {0770.17009},
     language = {en},
     url = {https://www.numdam.org/item/CM_1992__84_2_211_0/}
}
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Mehta, V. B.; Van der Kallen, Wilberd. A simultaneous Frobenius splitting for closures of conjugacy classes of nilpotent matrices. Compositio Mathematica, Tome 84 (1992) no. 2, pp. 211-221. https://www.numdam.org/item/CM_1992__84_2_211_0/

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