arXiv · math/0404400
Results on $L$-functions of Artin-Schreier coverings by Dwork, Bombieri and Adolphson-Sperber are generalized to $L$-functions of Witt coverings.
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Chunlei Liu, Dasheng Wei. 2004-09-06. The $L$-functions of Witt coverings. https://arxiv.org/abs/math/0404400
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