%0 Journal Article %A shahverdi, reza %T Vague Graph Structures: Some New Concepts and Applications %J Fuzzy Optimization and Modeling Journal %V 3 %N 4 %P 51-66 %D 2022 %R 10.30495/fomj.2023.1987580.1095 %U https://sanad.iau.ir/fa/Article/1002632