@article{Constantini-shape-preserving-2003,
  volume = {43},
  number = {2},
  mrnumber = {MR2010366 (2004j:65023)},
  issn = {0006-3835},
  author = {Costantini, Paolo and Sampoli, Maria Lucia},
  mrclass = {65D17},
  fjournal = {BIT. Numerical Mathematics},
  mrreviewer = {Manfred Tasche},
  title = {A general scheme for shape preserving planar interpolating curves},
  pages = {297--317},
  journal = {BIT},
  year = {2003},
}