1. (1) IEA: Medium-Term Renewable Energy Market Report 2016; International Energy Agency (2016)
2. (2) Renewable Energy Policy Network for the 21st Century (REN21), Renewables 2020 Global Status Report, France (2020)
3. (3) The Global Wind Energy Council (GWEC), Global Wind Report 2019, Brussels, Belgium (2019)
4. (4) Y. Zhang and P. Guo: “Review of FRT requirements for integration of wind energy in China and Europe”, International Conference on Electrical and Control Engineering, pp. 4177-4180 (2010)
5. (5) A. Gashi, et al.: “Simulation the wind grid code requirements for wind farms connection in Kosovo transmission grid”, Energy & Power Eng., Vol. 4, pp. 482-495 (2012)