MUHAMMAD JAVED KHAN; ZAFAR, Hamza. An Extended TOPSIS Method for the Multiple Attribute Decision Making Problems Based on double hierarchy linguistic soft sets (DHLSSs). VFAST Transactions on Mathematics, [S. l.], v. 13, n. 2, p. 41–54, 2025. DOI: 10.21015/vtm.v13i2.2161. Disponível em: https://vfast.org/journals/index.php/VTM/article/view/2161. Acesso em: 13 may. 2026.