@article {simidat235,
	title = {A Genetic Tuning to Improve the Performance of Fuzzy Rule-Based Classification Systems with Interval-Valued Fuzzy Sets: Degree of Ignorance and Lateral Position},
	journal = {International Journal of Approximate Reasoning},
	volume = {52},
	number = {6},
	year = {2011},
	pages = {751-766},
	doi = {10.1016/j.ijar.2011.0},
	author = {J. Sanz and A. Fern{\'a}ndez and H. Bustince and F. Herrera}
}
