Measuring the evolutionary stability of software systems: case studies of Linux and FreeBSD.

Liguo Yu Srini Ramaswamy Measuring the evolutionary stability of software systems: case studies of Linux and FreeBSD. 26-36 2009 3 IET Software 1 http://dx.doi.org/10.1049/iet-sen:20070099 db/journals/iee/iet-s3.html#YuR09