One-loop weak corrections to three-jet observables at the Z pole
  We briefly illustrate the impact of the genuinely weak one-loop virtual terms of the ${\cal O}(\alpha_{\rm S}\alpha_{\rm EW}^3)$ factorisable corrections to the three-jet cross section at $\sqrt s=M_Z$. Their importance for the measurement of $\alpha_{\rm S}$ at GigaZ luminosities is emphasised 
E. Maina (Torino), D.A. Ross (Southampton) and S. Moretti   (Southampton)