QIU, Dong; LI, Hua. ON CONVEXITY OF FUZZY MAPPINGS AND FUZZY OPTIMIZATIONS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 35, p. 293–304, 2015. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6432. Acesso em: 16 aug. 2026.