39Th International Scientific Conference on Economic and Social Development - Sustainability from an Economic and Social Perspective, Date: APR 29-30, 2019, Location: Lisbon, PORTUGAL, Sponsors: Varazdin Dev & Entrepreneurship Agcy, Univ Lusofona, Ctr Pesquisa & Estudos Sociais, Univ Lusofona, Ctr Investingacao Ciencia Politica Relacoes Internacionais & Seguranca, Fundacao Ciencia & Tecnologia, Univ Aveiro, Res Unit Governance, Competitiveness & Publ Policies, Univ N, Univ Warsaw, Fac Management, Mohammed V Univ Rabat, Fac Law, Econ & Social Sci Sale