Modeling bursts and heavy tails in human dynamics Alexei Vázquez,1,2 João Gama Oliveira,2,3 Zoltán Dezsö,2 Kwang-Il Goh,1,2 Imre Kondor,4 and Albert-László Barabási1,2 1Center for Cancer System Biology, Dana Farber Cancer Institute, Harvard Medical School, 44 Binney St, Boston, Massachusetts 02115, USA 2Department of …