STANCIULESCU, G. C.; BULIN, D. Indicators of Sustainable Development - A Comparative Analysis Between Bulgaria and Romania in European Context. International Journal of Economic Practices and Theories, [S. l.], v. 2, n. 2, p. 91-98, 2012. Disponível em: http://ijept.eu/index.php/ijept/article/view/indicators_of_sustainable_development_a_comparative_analysis_b. Acesso em: 27 apr. 2025.