@ARTICLE{Batsakis2009,
  AUTHOR =       {Sotiris Batsakis and Euripides G.M. Petrakis and Evangelos Milios},
  TITLE =        {Improving the performance of focused web crawlers},
  JOURNAL =      {Data and Knowledge Engineering},
  YEAR =         {2009},
  volume =       {68},
  number =       {10},
  pages =        {1001-1013},
  month =        {October},
}