DasCC87a'

@article{DBLP:journals/isci/DasCC87a,
  author    = {Partha Pratim Das and
               P. P. Chakrabarti and
               Biswanath N. Chatterji},
  title     = {Distance functions in digital geometry},
  journal   = {Inf. Sci.},
  volume    = {42},
  number    = {2},
  year      = {1987},
  pages     = {113-136},
  ee        = {http://dx.doi.org/10.1016/0020-0255(87)90019-3},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}