Geodesic
The fibre of the Prym map in genus four
Bollettino della Unione matematica italiana, Série 8, 2B (1999) no. 1, pp. 219-229.

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In questa nota si dà una descrizione della fibra della mappa di Prym in genere 4. Se $JX$ è la Jacobiana di una curva di genere 3, allora la fibra della mappa di Prym in $JX$ si ottiene dalla varietà di Kummer $KX$ mediante due scoppiamenti: $\sigma_{1} : KX(0) \to KX$ che è lo scoppiamento di $KX$ nell'origine e $\sigma_{2} : \widetilde{KX(0)} \to KX(0)$ che è lo scoppiamento lungo una curva isomorfa a $X$. 
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Hidalgo-Solís, Laura; Recillas-Pishmish, Sevin. The fibre of the Prym map in genus four. Bollettino della Unione matematica italiana, Série 8, 2B (1999) no. 1, pp. 219-229. http://geodesic.mathdoc.fr/item/BUMI_1999_8_2B_1_a9/

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