1. Araǵon, F., Rud, J., Toews, G., 2015. Mining closure, gender and employment reallocations: the case of UK coal mines, OxCarre Working Papers 161, Oxford Centre for the Analysis of Resource Rich Economies, University of Oxford. 33 p.
2. Water from abandoned mines as a heat source: practical experiences of open- and closed-loop strategies;Banks;Sustain. Water Resour. Manag,2019
3. Bochum Werne – Geothermieanlage. Bundesverband Geothermie, 2020. Available online https://www.geothermie.de/bibliothek/lexikon-der-geothermie/b/bochum-werne-geothermieanlage.html (accessed on 27 November 2022).
4. The Abandoned Underground Cherno More Coal Mine (SE Bulgaria) – a Source of Low Grade Geothermal Energy;Bojadgieva;Comptes rendus de l′Académie Bulgare des Sciences: Sciences mathématiques et naturelles,2013
5. Coal, 2021. Analysis and forecast to 2024. Available online https://iea.blob.core.windows.net/assets/f1d724d4-a753-4336-9f6e-64679fa23bbf/Coal2021.pdf (accessed on 28 November 2022).