@Article{barahona_etal:macro_evolution,
  author =       {Gonzalez-Barahona, Jesus M. and Robles, Gregorio and Michlmayr,
                  Martin and Amor, Juan José and German, Daniel M.},
  title =        {Macro-level software evolution: a case study of a large software compilation},
  journal =      {Empirical Software Engineering},
  volume =       {14},
  number =       {3},
  pages =        {262-285},
  month =        {June},
  year =         {2009},
}