[1] Univ Beira Interior, Dept Management & Econ, Covilha, Portugal
[2] Univ Beira Interior, NECE Res Unit Business Sci, Covilha, Portugal
[3] Loughborough Univ, Ctr Corp Entrepreneurship & Innovat, Loughborough, Leics, England
[4] Polytech Inst Viseu, Sch Educ, Viseu, Portugal
[5] NECE Res Unit Business Sci, Viseu, Portugal
[6] Free Univ Bozen Bolzano, Fac Econ & Management, Bolzano, Italy