NIKSIRAT, Malihe; NASSERI, Hadi S. Knapsack problem in fuzzy nature: Different models based on credibility ranking method. Yugoslav Journal of Operations Research, [S. l.], v. 32, n. 2, p. 203–218, 2022. DOI: 10.2298/YJOR210219021N. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/698. Acesso em: 26 aug. 2025.