Geodesic
On the Torelli and Schottky problems for Prym varietes
Izvestiya. Mathematics, Tome 45 (1995) no. 2, pp. 297-314 
D. Yu. Radionov. On the Torelli and Schottky problems for Prym varietes. Izvestiya. Mathematics, Tome 45 (1995) no. 2, pp. 297-314. http://geodesic.mathdoc.fr/item/IM2_1995_45_2_a3/
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is shown that the loci of tetragonal curves and Prymians yield irreducible components of the noninjectivity loci of the Prym map and theta map, respectively.

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