@conference {simidat31, title = {Multiobjective evolutionary induction of subgroup discovery rules in a market problem}, booktitle = {2nd International Conference on Machine Intelligence (ACIDCA-ICMI)}, year = {2005}, pages = {610-617}, address = {Tozeur (Tunisia)}, author = {F. J. Berlanga and M. J. del Jesus and P. Gonz{\'a}lez and F. Herrera} }