5V. ErnestoMendez, Traditional Shade, Rural Livelihoods and Conservation in Small Coffee Farms and Cooperatives of El Salvador, Agroecology Research Group, Environmental Studies Dept., University of California , Snata CRUZ. October 1999, www. agroecology, org.
8Colding, J. - Ecological land - use complementation for building resilience in urban ecosystems. Landscape and Urban Planning, 2007, 81: pp. 46- 55.
9Owen, S M, MacKenzie, A R, Bunce, R G H, et al. Urban land classification and its uncertainties using Princi- pal component and cluster analyses: A case study for the UK West Midlands. Landscape and Urban Planning, 2006, 78: pp. 311 - 321.