Geodesic
New theorem on the asymptotic equality of differential cross sections
Teoretičeskaâ i matematičeskaâ fizika, Tome 48 (1981) no. 3, pp. 424-427 
S. Yu. Medvedev. New theorem on the asymptotic equality of differential cross sections. Teoretičeskaâ i matematičeskaâ fizika, Tome 48 (1981) no. 3, pp. 424-427. http://geodesic.mathdoc.fr/item/TMF_1981_48_3_a13/
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     title = {New theorem on the asymptotic equality of differential cross sections},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1981_48_3_a13/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

Asymptotic equality for the differential cross sections of crossed-channel reactions is proved for the case when the imaginary part of at least one of the amplitudes – the symmetric or antisymmetric – does not have more than a finite number of zeros on the real axis.

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