@inproceedings{sch-99-pyts-ab,
  author = {R. Schickentanz},
  title = {Interpolation and Approximation using Surfaces with Rational Offsets},
  booktitle = {Abstracts of the 4th International AFA Conference on Curves and Surfaces},
  location = {Saint-Malo, France},
  pages = {70--71},
  year = 1999,
  month = jun
}