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 Degree–degree correlations for (a) nodes’ in-degree versus neighbors’ out-degree and (b) nodes’ out-degree versus neighbors’ in-degree.
