@article{cecchini09evolving, author = "Roc\'{\i}o L. Cecchini and Carlos M. Lorenzetti and Ana G. Maguitman", title = "Evolving {D}isjunctive and {C}onjunctive {T}opical {Q}ueries based on {M}ulti-objective {O}ptimization {C}riteria", journal = "Inteligencia Artificial", year = "2009", volume = "13", pages = "14--26", number = "44", doi = "10.4114/ia.v13i44.1042", url = "http://polar.lsi.uned.es/revista/index.php/ia/article/viewFile/620/602", issn = "1137--3601", }