Virtual Hadronic Corrections to Massive Bhabha Scattering
  Virtual hadronic contributions to the Bhabha process at the NNLO level are discussed. They are substantial for predictions with per mil accuracy. The studies of heavy fermion and hadron corrections complete the calculation of Bhabha virtual effects at the NNLO level. 
Stefano Actis (RWTH Aachen University), Janusz Gluza (University of   Silesia), Tord Riemann (DESY)