@Article{cabrerizo2009b, author = "F.J. Cabrerizo and S. Alonso and E. Herrera-Viedma", title = "A Consensus Model for Group Decision Making Problems with Unbalanced Fuzzy Linguistic Information", journal = "International Journal of Information Technology {\&} Decision Making", year = "2009", volume = "8", number = "1", pages = "109--131", }