ICSR is the premier international conference in the ?eld of software reuse. The main goal of ICSR is to present the advances and improvements within the software reuse domain, as well as to promote interaction between researchers and practitioners. The 11th International Conference on Software Reuse (ICSR 2009) was held during September 27-30, 2009 in Falls Church, VA, USA. 2009 was the year that ICSR went back to its roots. The theme was "Formal Foundations of Reuse and Domain Engineering." We explored the theory and formal foundations that underlie current reuse and domain engineering...