Users of Open Source Software - How Do They Get Help?, Singh, Vandana, Twidale Michael B., and Nichols David M. , 42nd Hawaii International Conference on System Sciences (HICSS 2009), Los Alamitos, CA, USA, p.1-10, (2009)

Understanding the Nature and Production Model of Hybrid Free and Open Source Systems: The Case of Varnish, Wubishet, Zegaye Seifu , 42nd Hawaii International Conference on System Sciences (HICSS 2009), Los Alamitos, CA, USA, p.1-11, (2009)