1. Núcleo de Tecnologia, Federal University of Pernambuco, Caruaru 55014-900, Brazil
2. Dipartimento di Economia Aziendale, University of Verona, Via Cantarane, 24, 37129 Verona, Italy
3. Campus do Sertão, Federal University of Alagoas, Delmiro Gouveia 57480-000, Brazil
4. Departamento de Administração, Federal University of Pará, Belém 66075-110, Brazil