@InProceedings { LSpi01,
author = {  Langevin, Philippe and  Sol\'e, Patrick  },
title  = {  {G}auss sums over quasi-{F}robenius rings  },
booktitle = {  Fq5  },
organization = {  Finite fields  },
pages = {  329--341  },
year = {2001},
rang = {B},
}