1. University of Málaga, Department of Economics and Business Management, E.I Industriales, C/Dr. Ortiz Ramos, s/n (Teatinos), 29071 Málaga, Spain
2. University of Granada, Department of Computer Architecture and Technology, University of Granada, Granada, Spain
3. University of Granada, Department of Architectural Construction, E.U. Arquitectura Técnica, C/Severo Ochoa s/n, 18071 Granada, Spain