http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/getty_museum_gateway_final.pdf
http://www1.eere.energy.gov/buildings/ssl/about_caliper.html
http://www1.eere.energy.gov/femp/information/download_blcc.html
http://www.eia.gov/cneaf/electricity/epm/chap5.pdf
http://www.getty.edu/conservation/our_projects/science/lighting/lighting_component8.html
http://www.conservationus.org/_data/n_0001/resources/live/Response%20from%20Steve%20Weintraub.pdf
http://www.cci-icc.gc.ca/caringfor-prendresoindes/articles/10agents/chap08-eng.aspx