VERMA, R. U. The ϵ−Optimality conditions for multiple objective fractional programming problems for generalized (ρ, η)−invexity of higher order. CUBO, A Mathematical Journal, [S. l.], v. 14, n. 2, p. 01–13, 2012. DOI: 10.4067/S0719-06462012000200001. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1339. Acesso em: 18 may. 2024.