1. Associate Professor, Dept. of Physics, Universitat de les Illes Balears, Balearic Islands, Spain, ctra. Valldemossa km 7.5, 07122 Mallorca, Spain.
2. Assistant Professor, Construction Engineering Dept., Civil Engineering School, Universitat Politècnica de Catalunya, Jordi Girona 1-3, C-1 201, 08034 Barcelona, Spain (corresponding author).
3. Architect, Assistant Professor, Dept. of Physics, Universitat de les Illes Balears, Balearic Islands, Spain, ctra. Valldemossa km 7.5, 07122 Mallorca, Spain,