@InCollection{jue:08c,
  author = {J. Gravesen and B. J\"uttler and Z. \v{S}\'{\i}r},
  title = {Approximating Offsets of Surfaces by using the Support Function Representation},
  booktitle = {Progress in Industrial Mathematics at ECMI 2006},
  editor = {L.L. Bonilla and M. Moscoso and G. Platero and J. M. Vega},
  publisher = {Springer},
  series = {Mathematics in Industry},
  volume = {12},
  year = 	 {2008},
  pages={719-723},
}