Presentation at 9th Workshop on Distributed Software Development, Software Ecosystems and Systems-of-Systems - WDES 2015 Website: http://wdes2015.icmc.usp.br/Index_en Proceedings (per paper): http://www.lbd.dcc.ufmg.br/bdbcomp/servlet/Evento?id=825 Proceedings (volume): http://cbsoft.org/articles/0000/0530/WDES.pdf