1992:
Nucl. Phys. B (Proc. Suppl.) 29A (1992)
1994: Physics at LEP200 and Beyond
Nucl. Phys. B (Proc. Suppl.) 37B (1994)
1996: QCD and QED in Higher Orders
Nucl. Phys. B (Proc. Suppl.) 51C (1996)