@article {simidat184, title = {Solving Multi-Class Problems with Linguistic Fuzzy Rule Based Classification Systems Based on Pairwise Learning and Preference Relations}, journal = {Fuzzy Sets and Systems}, volume = {161}, number = {23}, year = {2010}, pages = {3064-3080}, doi = {10.1016/j.fss.2010.05.016}, author = {A. Fern{\'a}ndez and M. Calder{\'o}n and E. Barrenechea and H. Bustince and F. Herrera} }