@phdthesis{76378,
  author = {R. Sibson},
  title = {Piecewise-quadratic functions and contouring},
  year = {1987},
  journal = {Workshop on Meteorological Operations Systems, 7-11 December 1987},
  pages = {87-93},
  month = {1987},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}