@article{DBLP:journals/dke/ZhuMYL08,
  author    = {Liang Zhu and
               Weiyi Meng and
               Wenzhu Yang and
               Chunnian Liu},
  title     = {Region clustering based evaluation of multiple top-N selection
               queries},
  journal   = {Data Knowl. Eng.},
  volume    = {64},
  number    = {2},
  year      = {2008},
  pages     = {439-461},
  ee        = {http://dx.doi.org/10.1016/j.datak.2007.09.004},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}