6Brown, K. , Carter, A. 2003. "Urban Agriculture and Community Food Security in the United States: Fanning from the City Center to the Urban Fringe. "A primer prepared by the Community Food Security Coalition' s (CFSC) North American Urban Agriculture Committee. CFSC, Venice, CA.
7Chiesa, T. 2009, Towards a Low Carbon Travel & Tourism Sector, World Economic Forum.
8Intergovernmental Panel on Climate Change (IPCC), 2007a. " Summary for Policymakers, Contribution of Working Group I of the Intergovernmental Panel on Climate Change. ".
9Intergovernmental Panel on Climate Change (IPCC), 2007b. "Summary for Policymakers, Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. ".
10Kisner, C. 2008a. "Green Roofs for Urban Food Security and Environmental Sustainability. Urban Agriculture Case Study: Havana, Cuba" Climate Institute. http ://www. climate, org/topies/international-action/urban-agricuhure/ havana, htm.
