1. Department of Graphic Design and Engineering Projects, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) Bilbao, Spain
2. Deusto Business School, Universidad de Deusto, Bilbao, Spain
3. Academic Unit of Electric Engineering, Universidad Autónoma de Zacatecas (UAZ), Zacatecas, Mexico
4. CONACYT – Universidad Autónoma de Zacatecas (UAZ), Zacatecas, Mexico