Roberto Trasarti Francesco Bonchi Bart Goethals Sequence Mining Automata: A New Technique for Mining Frequent Sequences under Regular Expressions. 1061-1066 2008 ICDM http://dx.doi.org/10.1109/ICDM.2008.111 conf/icdm/2008 db/conf/icdm/icdm2008.html#TrasartiBG08