@conference { PL2014b,
author = { Langevin, Philippe },
title  = { Algorithme sur les graphes et somme exponentielles },
booktitle = {   },
month  = { Octobre },
organization = {  sem. iaa imath },
address = { Toulon },
year = {2014},
rang = {S},
url  =  {http://arxiv.org/abs/1409.2459},
}