1. “UK Parliamentary Science and Technology Committee report on light pollution and astronomy”. House of Commons Science and Technology Committee, HC 747-I HMSO. 2003. https://publications.parliament.uk/pa/cm200203/cmselect/cmsctech/747/747.pdf.
2. British standards on road lighting BS5489 and EN 13201. Https://shop.bsigroup.com/ProductDetail/?pid=000000000030217237.
3. Towards understanding skyglow;Baddiley,2007
4. “Guidance Notes for the Reduction of Light Pollution”, (Revised 1994). Institution of Lighting Professionals. Https://www.theilp.org.uk/resources/free-resources/ilp-guidance-notes/.
5. Towards sky luminance based lighting standards;Baddiley,2008