Szymkiewicz, Joanna, and Juliusz Twardy. “Hydromorphological Quality of the Upper Section of the Ner River Using River Habitat Survey (RHS)”. Acta Universitatis Lodziensis. Folia Geographica Physica, no. 15 (February 13, 2017): [63]-75. Accessed December 17, 2025. https://www.czasopisma.uni.lodz.pl/geophysica/article/view/1080.