8Asur S, Huberman BA, Szab6 G, Wang C. Trends in social media: Persistence and decay. In: Adamic LA, Baeza-Yates RA, Counts S, eds. Proc. of the 5th Int'l AAAI Conf. on Weblogs and Social Media. Menlo Park: The AAAI Press, 2011. 434-437.
9Wang CX, Guan XH, Qin T, Li W. Who are active? An in-depth measurement on user activity characteristics in sina microblogging In: Proc. of the GLOBECOM. Piscataway: IEEE, 2012. 2083-2088. [doi: 10.1109/GLOCOM.2012.6503423].
10Romero DM, Galuba W, Asur S, Huberman BA. Influence and passivity in social media. In: Proc. of the 20th Int'l Conf. Companion on World Wide Web. New York: ACM Press, 2011. 113-114. [doi: 10.1145/1963192.1963250].
