*** apologies for multiple copies *** AOSD 2007 CALL FOR RESEARCH PAPERS 6th International Conference on Aspect-Oriented Software Development http://www.aosd.net/2007/cfc/research.php AOSD is the premier conference on software modularity that crosscuts traditional abstraction boundaries. It welcomes papers on this topic from all relevant communities, including software engineering, programming languages, type systems, formal methods, as well as applications and experience reports.