Jesús M. González-Barahona Gregorio Robles Israel Herraiz Impact of the Creation of the Mozilla Foundation in the Activity of Developers. 28 2007 conf/msr/2007 MSR http://doi.ieeecomputersociety.org/10.1109/MSR.2007.15 db/conf/msr/msr2007.html#Gonzalez-BarahonaRH07