@INPROCEEDINGS { LaSo1,
author = {  Langevin, Philippe and  Sol\'e, Patrick  },
title  = {  Kernels and Defaults  },
booktitle = {  Finite Fields : Theory, Applications and Algorithms  },
editor = {  R.~C.~Mullin, G.~L.~Mullen  },
pages = {  77--87  },
publisher = {  AMS  },
series  = {  Contemporary Mathematics  },
volume  = {  225  },
year = {1998},
rang = {B},
}