Hanghang Tong Yasushi Sakurai Tina Eliassi-Rad Christos Faloutsos Fast mining of complex time-stamped events. 759-768 2008 CIKM http://doi.acm.org/10.1145/1458082.1458184 conf/cikm/2008 db/conf/cikm/cikm2008.html#TongSEF08