Abramenko, Kaspars, Ainis Lagzdiņš, and Artūrs Veinbergs. “Water Quality Modeling in bērze River Catchment”. Journal of Environmental Engineering and Landscape Management 21, no. 4 (December 9, 2013): 316-324. Accessed August 9, 2022. https://journals.vilniustech.lt/index.php/JEELM/article/view/1945.