1. ASH Design and Assessment, 2011. Landscape/seascape capacity for aquaculture: Outer Hebrides pilot study. Scottish Natural Heritage Commissioned Report No. 460, 82 pp.
2. Benson, J.F., Scott, K.E., Anderson, C., Macfarlane, R., Dunstord, H., Turner, K., 2004. Landscape capacity study for onshore wind energy development in the Western Isles. SNH Commissioned Report No. 042 (ROAME No. F02LC04), 165 pp.
3. Integrating technologies for visual resource management;Bishop;Journal of Environment Management,1991
4. At what altitude does the horizon cease to be visible?;Bohren;American Journal of Physics,1986
5. A GIS-based approach for mapping direct use value of ecosystem services at a county scale: management implications;Chen;Ecological Economics,2009