Andy Kellens Kris De Schutter Theo D'Hondt Viviane Jonckers Hans Doggen Experiences in modularizing business rules into aspects. 448-451 2008 ICSM http://dx.doi.org/10.1109/ICSM.2008.4658101 conf/icsm/2008 db/conf/icsm/icsm2008.html#KellensSDJD08