We have enjoyed working together with:

• Dra. Jane Nelson, Queens University, Belfast, (U.K.)
• Dr. Michael Verdaguer, Univ. Pierre et Marie Curie, Paris, (France)
• Dra. Nora Barba-Behrens, UNAM, (Mexico)
• Dr. Marc Drillon, CNRS Strasbourg, (France)
• Dra. Helen Stoeckli-Evans, Univ. Neuchatel (Switzerland)
• Dr. Dante Gatteschi, Universita degli Studi di Firenze (Italy)
• Dr. Franz A. Mautner, Technische Universität Graz, (Austria)
• Dr. Mohamed A. S. Goher, Alexandria University (Egypt)
• Dr. Yves Journaux, Univ. Paris Paris-Sud, Paris (France)
• Dr. M. El Mernari, Univ. El Jadida, (Morocco)
• Prof. Spyros P. Perlepes, University of Patras, Greece.
• and Enrique Colacio (Univ. Granada), Francesc Lloret (Univ. Valencia) and Roberto Cortés (Univ. del Pais Vasco), Spain.