Márcio P. Basgalupp Rodrigo C. Barros Duncan D. Ruiz Predicting software maintenance effort through evolutionary-based decision trees. 1209-1214 2012 SAC http://doi.acm.org/10.1145/2245276.2231966 conf/sac/2012 db/conf/sac/sac2012.html#BasgaluppBR12