Bielenin, Kazimierz, and Ireneusz Suliga. “THE ANCIENT SLAG-PIT FURNACE AND THE REDUCTION PROCESS IN THE LIGHT OF NEW ARCHAEOLOGICAL CONCEPT AND METALLURGICAL RESEARCH”. Metallurgy and Foundry Engineering 34, no. 1 (June 30, 2008): 53. Accessed July 3, 2024. https://journals.agh.edu.pl/mafe/article/view/337.