ACHIM, Monica Violeta; BORLEA, Sorin Nicolae; GĂBAN, Lucian Vasile; CUCEU, Ionut Constantin. Rethinking the shadow economy in terms of happiness. Evidence for the European Union Member States. Technological and Economic Development of Economy, [S. l.], v. 24, n. 1, p. 199–228, 2018. DOI: 10.3846/20294913.2016.1209250. Disponível em: https://journals.vilniustech.lt/index.php/TEDE/article/view/84. Acesso em: 9 may. 2025.