@book{gomes_08,
  title = "Implicit Curves and Surfaces: Mathematics, Data Structures and Algorithms",
  author = "Abel  Gomes and Irina Voiculescu and Joaquim Jorge and Bryan Wyvill and Callum Galbraith",
  year = "2009",
  isbn = "978-1-84882-405-8",
  publisher = "Springer Verlag",
  url = "http://www.springer.com/computer/foundations/book/978-1-84882-405-8",
}