Li, S. S., R. Rousseau, F. Y. Ye, S. S. Li, R. Rousseau, and F. Y. Ye. “Motifs in Weighted Networks and Their Hirsch Subgraphs”. Malaysian Journal of Library and Information Science, vol. 21, no. 3, Oct. 2016, pp. 21-34, doi:10.22452/mjlis.vol21no3.2.