Haiko, Hennadii, Volodymyr Biletsky, and Vitaly Biletskyi. “Who Discovered the Donetsk Coal Basin and When It Was Discovered: Information War on the Donbas Frontier”. Skhid 3, no. 3 (June 14, 2023): 25–32. Accessed December 22, 2024. https://skhid.kubg.edu.ua/article/view/266403.