1. Ph.D., Professor, Higher Institute of Labour and Business Sciences - University Institute of Lisbon (ISCTE-IUL)
2. Ph.D., Professor, Lusófona University, and Higher Institute of Labour and Business Sciences - University Institute of Lisbon (ISCTE-IUL)
3. Ph.D. Student, Researcher, Higher Institute of Labour and Business Sciences - University Institute of Lisbon (ISCTE-IUL)