[1] Univ Beira Interior, Dept Business & Econ, Estr Sineiro, P-6200209 Covilha, Portugal
[2] Univ Beira Interior, NECE Res Unit Business Sci, Estr Sineiro, P-6200209 Covilha, Portugal
[3] Univ Beira Interior, Dept Management & Econ, Covilha, Portugal
[4] Loughborough Univ, Ctr Corp Entrepreneurship & Innovat, Loughborough, Leics, England
[5] Parthenope Univ Naples, Dept Management Studies & Quantitat Methods, Via Gen Parisi 13, I-80132 Naples, Italy
[6] Paris Sch Business, 59 Rue Natl, F-75013 Paris, France
[7] Univ New Mexico, Int & Innovat Anderson Sch Management, Dept Finance, Albuquerque, NM 87131 USA