Henry Z. Lo Dan A. Simovici Wei Ding 0003 Several Remarks on Mining Frequent Trajectories in Graphs. 78-87 2012 IEA/AIE https://doi.org/10.1007/978-3-642-31087-4_9 conf/ieaaie/2012 db/conf/ieaaie/ieaaie2012.html#LoS012