@article{Goldapp-91-CAGD-circle-cubic,
  volume = {8},
  number = {3},
  mrnumber = {MR1122918},
  issn = {0167-8396},
  author = {Goldapp, Michael},
  mrclass = {65D15 (65D17)},
  fjournal = {Computer Aided Geometric Design},
  coden = {CAGDEX},
  title = {Approximation of circular arcs by cubic polynomials},
  pages = {227--238},
  journal = {Comput. Aided Geom. Design},
  year = {1991},
}