9] Morales A J, Borondo J, Losada J C, et al. Efficiency of Human Activity on Information Spreading on Twitter[ J]. Social Networks, 2014, 39:1 -ll.
10Tanaka Y, Sakamoto Y, Honda H. The Impact of Posting URLs in Disaster-related Tweets on Rumor Spreading Behavior [ C ]. System Sciences (HICSS), 2014 47th Hawaii International Conference on IEEE, 2014. 520-529.