Alberto Rodrigues da Silva Gonçalo Lemos Tiago Matias Marco Costa The XIS Generative Programming Techniques. 236-241 2003 conf/compsac/2003 COMPSAC http://csdl.computer.org/comp/proceedings/compsac/2003/2020/00/20200236abs.htm db/conf/compsac/compsac2003.html#SilvaLMC03