Oppelt, Lukas, Thomas Grab, Timm Wunderlich, Thomas Storch, and Tobias Fieback. “Mine Water Geothermal Energy: Abandoned Mines As a Green Energy Source”. CLIMA 2022 conference (May 5, 2022). Accessed April 9, 2025. https://proceedings.open.tudelft.nl/clima2022/article/view/55.