BryniarskiW98'

@article{DBLP:journals/jancl/BryniarskiW98,
  author    = {Edward Bryniarski and
               Urszula Wybraniec-Skardowska},
  title     = {Calculus of Contextual Rough Sets in Contextual Spaces},
  journal   = {Journal of Applied Non-Classical Logics},
  volume    = {8},
  number    = {1-2},
  year      = {1998},
  pages     = {9-26},
  ee        = {http://dx.doi.org/10.1080/11663081.1998.10510931},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}