Shandra, Iryna, and Olena Kravchenko. “Congresses of Mining Industrialists of the South of Russia and the Kingdom of Poland As a Form of Representing Entrepreneur’s Interests (End of the 19th – Beginning of the 20th Century)”. Studia Historiae Oeconomicae, vol. 38, Dec. 2020, pp. 182-01, doi:10.2478/sho-2020-0008.