1. a Department of Industrial Management, School of Engineering , University of Seville , Camino de los Descubrimientos s/n, Sevilla, 41092, Spain
2. b Department of Accounting and Information Systems, College of Administrative Science , The University of Alabama in Huntsville , Huntsville, AL, 35899, USA
3. c Qualmaint, S.L. Maintenance Engineering , Av. San Francisco Javier 2, Sevilla, 41018, Spain