@conference {simidat7,
	title = {An Study on the Combination of Evolutionary Algorithms and Stratified Strategies for Training Set Selection in Data Mining},
	booktitle = {Proceedings of the 8th Online World Conference on Soft Computing in Industrial Applications},
	year = {2003},
	month = {September},
	author = {J. R. Cano and F. Herrera and M. Lozano}
}
