• Reliability of electric power generation in power systems with thermal and wind power plantsValdma, Mati; Keel, Matti; Tammoja, Heiki; Kilk, AleksanderOil shale2007 / p. 197-208 : ill https://www.researchgate.net/publication/228623749_Reliability_of_electric_power_generation_in_power_systems_with_thermal_and_wind_plants