M. Kłopotek, S. Wierzchoń, K. Ciesielski, M. Dramiński, D. Czerski, and M. Kujawiak, “Map Quality Measurements for GNG and SOM based Document Collection Maps”, SI, vol. 7, no. 1-2, pp. 65–76, Dec. 2006, Accessed: Oct. 30, 2024. [Online]. Available: https://czasopisma.uws.edu.pl/studiainformatica/article/view/2851