Open Source Systems: Long-Term Sustainability 8th IFIP WG 2.13 International Conference, OSS 2012, Hammamet, Tunisia, September 10-13, 2012. Proceedings - Hammouda, Imed; Lundell, Björn; Mikkonen, Tommi; Scacchi, Walt (Springer Berlin Heidelberg : Imprint: Springer, 2012)