⊤-Fuzzy Subgroups with Thresholds. - Bao Qing Hu; Yan Qing Niu (ACFIE, 2008)

The Topological and Statistical Analysis of Public Transport Network Based on Fuzzy Clustering. - Min Wang; Bao Qing Hu; Xia Wu; Yan Qing Niu (ICFIE, 2009)