Twardy, Juliusz. “Transformation of Selected Relief Landforms of the Łódź Voivodeship in the Last Century”. Acta Geographica Lodziensia 109 (December 22, 2019): 11–28. Accessed July 22, 2024. https://journals.ltn.lodz.pl/Acta-Geographica-Lodziensia/article/view/642.