Lucineia Turnes, Rodrigo Bonifácio, Vander Alves, and Ralf Lammel. 2011.
 Techniques for Developing a Product Line of Product Line Tools: A Comparative Study. In <em>Proceedings of the 5th Brazilian Symposium on Software Components, Architectures, and Reuse</em>, September 26, 2011, São Paulo/SP, Brasil. SBC, Porto Alegre, Brasil, 11-20.