Kruszynski, Wojciech, Dariusz Andraka, Bartosz Kaźmierczak, Katarzyna Jaroszewicz, and Marcin Moskal. 2023. “Water Age Modeling As a Tool to Improve the Quality and Reduce the Costs of Water Treatment in Polanica-Zdrój”. Economics and Environment 86 (3): 436-52. https://doi.org/10.34659/eis.2023.86.3.564.