Pociecha, Józef. “Professor Julius F. Leo – Scientist, Municipal Manager, Politician, and His Economic and Political Views”. Acta Universitatis Lodziensis. Folia Oeconomica 1, no. 346 (February 3, 2020): 85–95. Accessed March 13, 2025. https://czasopisma.uni.lodz.pl/foe/article/view/3989.