1. Oxford Dictionary of National Biography. https://www.oxforddnb.com/display/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-11685;jsessionid=770A55DF81FB78253D7966897D9386B2 (accessed 19 July, 2023).
2. J. Verne, “The Mysterious Island”, second part – The forsaken, Vol. 4, Ed. Guigoni, 1890; cap. 11, p. 13.
3. Consequences of Climate Change. https://climate.ec.europa.eu/climate-change/consequences-climate-change_en (accessed 19 July, 2023).
4. A European Green Deal. https://commission.europa.eu/strategy-and-policy/priorities-2019-2024/european-green-deal_en (accessed 19 July, 2023).
5. European Partnership for Hydrogen Technologies. https://www.clean-hydrogen.europa.eu/index_en (accessed 19 July, 2023).