[1] Univ Barcelona, Dept Matemat Econ Financera & Actuarial, Barcelona, Spain
[2] Univ Barcelona, Dept Econ, Barcelona, Spain
[3] Univ Barcelona, Dept Sociol, Barcelona, Spain
[4] Univ Barcelona, Dept Empresa, Barcelona, Spain
[5] Univ Barcelona, Dept Econ Estadist & Econ Aplicada, Barcelona, Spain