General elephants of ℚ-Fano 3-folds
Compositio Mathematica, Tome 91 (1994) no. 1, pp. 91-116. 
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     mrnumber = {1273928},
     zbl = {0813.14028},
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     url = {http://www.numdam.org/item/CM_1994__91_1_91_0/}
}
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Alexeev, Valery. General elephants of $\mathbb {Q}$-Fano 3-folds. Compositio Mathematica, Tome 91 (1994) no. 1, pp. 91-116. http://www.numdam.org/item/CM_1994__91_1_91_0/

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