1. Green power accounting : Steps towards a European market for renewable electricity;Niermeijer;Refocus,2004
2. Global Wind Energy Council (GWEC). Global wind report 2018, https://gwec.net/global-wind-report-2018/; 2019 [accessed 3 Feb 2020].
3. Global Wind Energy Council (GWEC). Global wind report 2016, https://gwec.net/global-wind-report-2016/; 2017 [accessed 3 Feb 2020].
4. Global Wind Energy Council (GWEC). Global wind report 2013, https://gwec.net/global-wind-report-2013/; 2014 [accessed 3 Feb 2020].
5. REN21. Renewables 2018 global status report, https://www.ren21.net/ status-of-renewables/global-status-report/>. 2019 [accessed 3 Feb 2020].