DR.V.KAMAL NASIR, V.P.BEENU. Transportation Problem with Heptagonal Intuitionistic Fuzzy Number Solved Using Value Index and Ambiguity Index. Mathematical Statistician and Engineering Applications, [S. l.], v. 71, n. 4, p. 3345–3353, 2022. DOI: 10.17762/msea.v71i4.894. Disponível em: https://www.philstat.org/index.php/MSEA/article/view/894. Acesso em: 4 may. 2024.