Koen Vanderkimpen Marko van Dooren Eric Steegmans Using Customizable Properties to make Object Representation a First-class Citizen. 27-46 2007 4 Comput. Sci. Inf. Syst. 2 http://www.comsis.fon.bg.ac.yu/ComSIS/Vol4No2/RegularPapers/paper2.htm db/journals/comsis/comsis4.html#VanderkimpenDS07