Liu, Yun; Hou, Tao; Liu, Fu: 'Improving fuzzy <i>c</i>-means method for unbalanced dataset', Electronics Letters, 2015, 51, (23), p. 1880-1882, DOI: 10.1049/el.2015.1541
IET Digital Library, https://digital-library.theiet.org/;jsessionid=6ob2d2ros5bat.x-iet-live-01content/journals/10.1049/el.2015.1541