Empirical investigation of topological and weighted properties of a bus transport network from China
Feng Shu-Min, Hu Bao-Yu†, 
, Nie Cen, Shen Xiang-Hao, Ci Yu-Sheng
, Nie Cen, Shen Xiang-Hao, Ci Yu-Sheng (a) Bus transport map; (b) extended bipartite graph; (c) unipartite graph; (d) directed unipartite graph.
