@InProceedings{Da_Silva-et-al:ISI2007,
      AUTHOR = {Da Silva, Alzennyr and Lechevallier, Yves and Rossi, Fabrice and De Carvalho, Francisco},
      TITLE = {Clustering Strategies for Detecting Changes on Web Usage Data},
      YEAR = {2007},
      MONTH = {22-29 August},
      BOOKTITLE = {56th Session of the International Statistical Institute (ISI 2007)},
      ADDRESS = {Lisbon, Portugal},
      EDITOR = {Gomes, Ivete and Pestana, Dinis and Silva, Pedro}, 
      KEYWORDS = {Clustering, Evolving data, Web Usage Mining}
}