Kuprianis, Artur. “On Highest Alert. The Military Garrison of Łódź and the May Day Demonstrations in the Second Polish Republic”. Przegląd Nauk Historycznych/Review of Historical Sciences 21, no. 1 (June 28, 2022): 223–247. Accessed December 6, 2025. https://www.czasopisma.uni.lodz.pl/pnh/article/view/11885.