PHILLIS, Yannis A.; KOUIKOGLOU, Vassilis S.; GRIGOROUDIS, Evangelos; KANELLOS, Fotis D. On a mathematical theory of sustainability assessment. Proceedings of the European Academy of Sciences and Arts, [S. l.], v. 1, n. 1, 2022. DOI: 10.4081/peasa.13. Disponível em: https://www.peasa.eu/site/article/view/13. Acesso em: 3 jan. 2026.