MISHRA, S.K.; UPADHYAY, B.B. Efficiency and duality in nonsmooth multiobjective fractional programming involving η-pseudolinear functions. Yugoslav Journal of Operations Research, [S. l.], v. 22, n. 1, p. 3–18, 2012. DOI: 10.2298/YJOR101215002M. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/327. Acesso em: 26 aug. 2025.