Institution: | 1. Department of Physics, School of Science, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece;2. Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México Av. Universidad s/n, Cuernavaca 62251, Mexico;3. Department of Civil Engineering, Division of Structural Engineering, University of Patras, Patras GR-26504, Greece |