@article{Mann2013, author = "J Mann and J Teilmann", title = "{The global yearly production of electrical energy by wind turbines showing an exponential development over the last two decades with a doubling time of three years}", year = "2013", month = "7", url = "https://iop.figshare.com/articles/figure/_The_global_yearly_production_of_electrical_energy_by_wind_turbines_showing_an_exponential_developme/1011662", doi = "10.6084/m9.figshare.1011662.v1" }