1. Research Centre in Digital Services (CISeD), Instituto Politécnico de Viseu, Av. Cor. José Maria Vale de Andrade, Campus Politécnico, 3504-510 Viseu, Portugal
2. Center for Studies in Education and Innovation (CIDEI), Instituto Politécnico de Viseu, Av. Cor. José Maria Vale de Andrade, Campus Politécnico, 3504-510 Viseu, Portugal
3. Centre of Applied Research in Management and Economics (CARME), Edifício C, Campus 2 do IPLeiria, Morro do Lena, Alto do Vieiro, 2411-901 Leiria, Portugal
4. ESEV-Instituto Politécnico de Viseu, Av. Cor. José Maria Vale de Andrade, Campus Politécnico, 3504-510 Viseu, Portugal