OTEPKA, P.; GRYNENKO, V. Sustainable development deficit in Europe: modelling, ranking, and classification of countries. Ecocycles, [S. l.], v. 4, n. 1, p. 1–9, 2018. DOI: 10.19040/ecocycles.v4i1.84. Disponível em: https://www.ecocycles.net/ojs/index.php/ecocycles/article/view/84. Acesso em: 30 jun. 2022.