1. The ALEPH Collaboration Determination of the Number of Light Neutrino Species 1989
2. The DELPHI Collaboration Measurement of the Mass and Width of the Z°-Particle from Multihadronic Final States Produced in e + e − Annihilations 1989
3. The L3 Collaboration A Determination of the Properties of the Neutral Intermediate Vector Boson Z° 1989
4. The OPAL Collaboration Measurements of the Z° Mass and Width with the OPAL Detector at LEP 1989
5. Weitere Bestätigungen des Standardmodells: Bericht vom XIV. Internationalen Symposium über Lepton- und Photon-Wechselwirkungen