Ustrnul, Zbigniew, and Tadeusz Niedźwiedź. “Extreme Environmental Events – a Proposed Classification (based on the Example of Central Europe)”. Quaestiones Geographicae 44, no. 3 (September 17, 2025): 175–185. Accessed February 11, 2026. https://pressto.amu.edu.pl/index.php/qg/article/view/49684.