Gruberts, Dāvis, and Kristīne Vilcāne. “Floodwater Storage Capacity of the Middle Daugava Floodplain”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (June 17, 2015): 112–115. Accessed April 28, 2024. https://journals.rta.lv/index.php/ETR/article/view/251.