PawlakS07a'

BibTeX

@article{DBLP:journals/isci/PawlakS07a,
  author    = {Zdzislaw Pawlak and
               Andrzej Skowron},
  title     = {Rough sets: Some extensions},
  journal   = {Inf. Sci.},
  volume    = {177},
  number    = {1},
  year      = {2007},
  pages     = {28-40},
  ee        = {http://dx.doi.org/10.1016/j.ins.2006.06.006},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}