@article {simidat58,
	title = {Making CN2-SD Subgroup Discovery Algorithm scalable to Large Size Data Sets using Instance Selection},
	journal = {Expert Systems with Applications},
	volume = {35},
	year = {2008},
	pages = {1949-1965},
	author = {J. R. Cano and F. Herrera and M. Lozano and S. Garc{\'\i}a}
}
