Kłopotek, Mieczysław, Sławomir Wierzchoń, Krzysztof Ciesielski, Michał Dramiński, Dariusz Czerski, and Mariusz Kujawiak. “Map Quality Measurements for GNG and SOM Based Document Collection Maps”. Studia Informatica. System and information technology 7, no. 1-2 (December 15, 2006): 65–76. Accessed May 7, 2024. https://czasopisma.uph.edu.pl/studiainformatica/article/view/2851.