fotometrija, [3] "Hrvatska enciklopedija", Leksikografski zavod Miroslav Krleža, www.enciklopedija.hr, 2016.
energyrating.com.au
Pears, Alan (јун 1998). „Chapter 7: Appliance technologies and scope for emission reduction”. Strategic Study of Household Energy and Greenhouse Issues(PDF). Sustainable Solutions Pty Ltd. Department of Industry and Science, Commonwealth of Australia. стр. 61. Архивирано из оригинала(PDF) 2. 3. 2011. г. Приступљено 2008-06-26.CS1 одржавање: Формат датума (веза)
google.ca
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Schlyter, Paul (1997—2009). „Radiometry and photometry in astronomy”. Starlight illuminance coincides with the human eye's minimum illuminance while moonlight coincides with the human eye's minimum colour vision illuminance (IEE Reviews, 1972, page 1183).
Schlyter, Paul (1997—2009). „Radiometry and photometry in astronomy”. Starlight illuminance coincides with the human eye's minimum illuminance while moonlight coincides with the human eye's minimum colour vision illuminance (IEE Reviews, 1972, page 1183).
Pears, Alan (јун 1998). „Chapter 7: Appliance technologies and scope for emission reduction”. Strategic Study of Household Energy and Greenhouse Issues(PDF). Sustainable Solutions Pty Ltd. Department of Industry and Science, Commonwealth of Australia. стр. 61. Архивирано из оригинала(PDF) 2. 3. 2011. г. Приступљено 2008-06-26.CS1 одржавање: Формат датума (веза)