Subsequently, he spent twelve years in Europe, six of them as a Staff Member of the European Laboratory for Particle Physics (CERN) in Geneva, and the remainder as a research associate at the University of Berne, University of Dortmund, and at the Max Planck Institute in Munich.
Following this period, he dedicated twelve years to Europe, working six years as a Staff Member at CERN in Geneva and the remaining six years as a research associate at various institutions including the University of Berne, University of Dortmund, and the Max Planck Institute in Munich.