1. Cossu, R., Piovesan, E., 2007. Modern strategies in waste management for sustainability and control of global climate change. In: Sardinia 2007 Proceedings, Eleventh International Waste Management and Landfill Symposium. CISA Publisher, ISBN: 978-88-6265-003-8.
2. Eurostat, 2008. Europe in Figures, Yearbook .
3. Karagiannidis, A., Themelis, N.J., 2008. Expanding the waste management hierarchy for reducing methane emissions from landfills. In: Venice 2008 Proceedings. CISA Publisher, ISBN: 978-88-6265-004-5.
4. OECD, 2007. Environmental Data Compendium .
5. UN-ESCAP, 2000. State of the Environment in Asian and the Pacific, United Nations-Economic and Social Commission for Asia and the Pacific .