Kobylińska, Małgorzata. “Application of Methods of Two-Dimensional Data Analysis Based on Observation Depth Measure in a Sample”. Olsztyn Economic Journal 20, no. 2 (December 11, 2025): 185–197. Accessed January 11, 2026. https://czasopisma.uwm.edu.pl/index.php/oej/article/view/11936.