@article{DBLP:journals/isci/DavvazM06,
  author    = {Bijan Davvaz and
               M. Mahdavipour},
  title     = {Roughness in modules},
  journal   = {Inf. Sci.},
  volume    = {176},
  number    = {24},
  year      = {2006},
  pages     = {3658-3674},
  ee        = {http://dx.doi.org/10.1016/j.ins.2006.02.014},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}