ButtB93'

@article{DBLP:journals/cg/ButtB93,
  author    = {Sohail Butt and
               Ken Brodlie},
  title     = {Preserving positivity using piecewise cubic interpolation},
  journal   = {Computers {\&} Graphics},
  volume    = {17},
  number    = {1},
  year      = {1993},
  pages     = {55-64},
  ee        = {http://dx.doi.org/10.1016/0097-8493(93)90051-A},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}