@InProceedings{generations:msr09,
  author    = 	 {Gregorio Robles and Jesus M. Gonzalez-Barahona and Israel Herraiz},
  title     =  	 {Evolution of the core team of developers in libre software projects},
  booktitle =    {Proceedings of the 6th IEEE International Working Conference on Mining Software Repositories (MSR)},
  pages     = 	 {167--170},
  year      = 	 {2009},
  location  =    {Vancouver, BC, Canada}
}