1. World Energy Balances, Overview, International Energy Agency. (2019), Available online: https://webstore.iea.org/world-energy-balances-2019-overview
2. Benamor A., Nasser M., Al-Marri M.J., Gas processing technology-treatment and utilization, in
Encyclopedia of Sustainable Technologies
(Elsevier, 2017), pp. 359–387
3. Detollenaere A., Van Wetter J., Masson G., Kaizuka I., Jäger-Waldau A., Donoso J., Snapshot of global PV markets 2021 task 1 strategic PV analysis and outreach, Int. Energy Agency (IEV PVPS), Report IEA-PVPS T1-39:2021, April 2021
4. Snapshot of photovoltaics − March 2021