Evolution and Growth in Large Libre Software Projects. - Gregorio Robles; Juan José Amor; Jesús M. González-Barahona; Israel Herraiz (IWPSE, 2005)

Measuring Woody: The Size of Debian 3.0 - Juan José Amor; Gregorio Robles; Jesús M. González-Barahona (CoRR, 2005)

The processes of joining in global distributed software projects. - Israel Herraiz; Gregorio Robles; Juan José Amor; Teofilo Romera; Jesús M. González-Barahona (GSD@ICSE, 2006)

Mining large software compilations over time: another perspective of software evolution. - Gregorio Robles; Jesús M. González-Barahona; Martin Michlmayr; Juan José Amor (MSR, 2006)

Macro-level software evolution: a case study of a large software compilation. - Jesús M. González-Barahona; Gregorio Robles; Martin Michlmayr; Juan José Amor; Daniel M. Germán (Empir. Softw. Eng., 2009)