Geodesic
N\'eron pairing and quasicharacters
Izvestiya. Mathematics , Tome 6 (1972) no. 3, pp. 491-503.

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In this paper we answer a question posed by Yu. I. Manin: for which quasicharacters does there exist a generalized Néron pairing? It turns out that the quasicharacter must trivialize some explicitly described group of roots of unity. In addition, we establish in this paper a connection between generalized Néron pairings and the biextensions of Mumford. 
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Yu. G. Zarhin. N\'eron pairing and quasicharacters. Izvestiya. Mathematics , Tome 6 (1972) no. 3, pp. 491-503. http://geodesic.mathdoc.fr/item/IM2_1972_6_3_a2/

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