1. World Energy Outlook, WEO 2016 Electricity Access Database; International Energy Agency (IEA), 2016. Available from: http://www.worldenergyoutlook.org/resources/energydevelopment/energyaccessdatabase/.
2. Solar energy engineering;Kalogirou,2009
3. Fraunhofer ISE and PSE AG, Photovoltaics Report; Fraunhofer Institute for Solar Energy Systems; Freiburg, 2017.
4. Solar PV in Africa: costs and markets,2016
5. Charles RG, Davies ML, Douglas P, Third generation photovoltaics; early intervention for circular economy and a sustainable future. In: Electronics Goes Green 2016+ (EGG) 2016; 1–8.