Maurice Houle

Tribhuvan University

Deutsches Bergbau-Museum, Bochum

National & Kapodistrian University of Athens

Université de Genève

Centre National de la Recherche Scientifique / French National Centre for Scientific Research

Uppsala University

National & Kapodistrian University of Athens

Faculty of Technical & Engineering, Islamic Azad University South Tehran Branch, Tehran, Iran

University of Salamanca

Aristotle University of Thessaloniki