On Jacobi Sums in $\mathbb Q(\zeta_p)$
  We study the p-adic behavior of Jacobi Sums for $\mathbb Q(\zeta_p)$ and link this study to the p-Sylow subgroup of the ideal class group of $\mathbb Q(\zeta_p\`a^+$ 
Bruno Angles (LMNO), Filippo A. E. Nuccio (LMNO)