https://english.radio.cz/demonstrators-call-ending-czech-coal-mining-2038-8707143

https://www.euronews.com/2021/02/23/czech-republic-set-to-take-poland-to-court-over-coal-mine-expansion

https://www.bloomberg.com/news/articles/2021-02-19/why-even-pristine-sweden-struggles-with-green-energy-quicktake

https://ec.europa.eu/eurostat/statistics-explained/index.php/Electricity_price_statistics

https://sputniknews.com/europe/202102081082013825-swedes-scoff-as-state-tv-urges-not-to-use-vacuum-cleaners-amid-severe-power-shortages/

https://phys.org/news/2018-05-dutch-firm-asml-microchip-tech.html

https://www.investopedia.com/articles/investing/012715/5-richest-people-world.asp