Clemente Izurieta, James M. Bieman. The evolution of FreeBSD and Linux. In Guilherme Horta Travassos, José Carlos Maldonado, Claes Wohlin, editors, 2006 International Symposium on Empirical Software Engineering (ISESE 2006), September 21-22, 2006, Rio de Janeiro, Brazil. pages 204-211, ACM, 2006. [doi]
Abstract is missing.