Under CopyrightBraun, AxelAxelBraunFritz, RafaelRafaelFritzOtterson, ScottScottOtterson2022-03-1218.9.20152013https://publica.fraunhofer.de/handle/publica/38381410.24406/publica-fhg-383814enAre forecasting errors of wind and solar power statistically dependent?conference paper