@ARTICLE(Gac10,
 author = "M. J. Gacto and R. Alcal\'a and F. Herrera",
 title = "Integration of an Index to Preserve the Semantic Interpretability in the Multi-Objective Evolutionary Rule Selection and Tuning of Linguistic Fuzzy Systems",
 journal = "IEEE Transactions on Fuzzy Systems",
 year = "2010",
 volume = "18",
 number = "3",
 pages = "515-531"
)