no. 3
Quasi-Gorenstein Fano 3-folds with isolated non-rational loci
Compositio Mathematica, Tome 77 (1991) no. 3, pp. 335-341 
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     author = {Ishii, Shihoko},
     title = {Quasi-Gorenstein {Fano} 3-folds with isolated non-rational loci},
     journal = {Compositio Mathematica},
     pages = {335--341},
     year = {1991},
     publisher = {Kluwer Academic Publishers},
     volume = {77},
     number = {3},
     mrnumber = {1092773},
     zbl = {0738.14025},
     language = {en},
     url = {https://www.numdam.org/item/CM_1991__77_3_335_0/}
}
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Ishii, Shihoko. Quasi-Gorenstein Fano 3-folds with isolated non-rational loci. Compositio Mathematica, Tome 77 (1991) no. 3, pp. 335-341. https://www.numdam.org/item/CM_1991__77_3_335_0/

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