@techreport{ahonen*97:mining,
   author = {Ahonen, H and Heinonen, O. and Klemettinen, M. and Verkamo A.I.},
   institution = {University of Helsinki, Department of Computer Science},
   number = {C-1997-14},
   title = {Mining in the Phrasal Frontier},
   year = {1997}
}

@techreport{ahonen*97:applying,
   author = {Ahonen, H and Heinonen, O. and Klemettinen, M. and Verkamo A.I.},
   institution = {University of Helsinki, Department of Computer Science},
   number = {C-1997},
   title = {Applying Data Mining Techniques in Text Analysis},
   year = {1997}
}

@techreport{mannila*97:discovery,
   author = {Mannila, H. and Toivonen, H. and Verkamo A.I.},
   institution = {University of Helsinki, Department of Computer Science},
   number = {C-1997-15},
   title = {Discovery of Frequent Episodes in Event Sequences},
   year = {1997}
}

@inproceedings{feldman*97:document,
   author = {Feldman, R. and Kloesgen, W. and Zilberstein, A.},
   booktitle = {Proceedings of ISMIS97},
   publisher = {Springer Verlag},
   series = {Lecture Notes in AI},
   title = {Document Explorer: Discovering Knowledge in Document Collections},
   year = {1997}
}