Federico Divina Maarten Keijzer Elena Marchiori A Method for Handling Numerical Attributes in GA-Based Inductive Concept Learners. 898-908 2003 conf/gecco/2003-1 GECCO http://dx.doi.org/10.1007/3-540-45105-6_102 db/conf/gecco/gecco2003-1.html#DivinaKM03