Liziński, Tadeusz, Marcin Bukowski, and Anna Wróblewska. “Effectiveness of Flood Protection Project Valuation Methods”. Olsztyn Economic Journal 10, no. 3 (November 30, 2015): 275–289. Accessed July 22, 2024. https://czasopisma.uwm.edu.pl/index.php/oej/article/view/3152.