@book{CLO,
  author = {David Cox and John Little and Donal O'Shea},
  title = {{Ideals, Varieties, and Algorithms}},
  publisher = {Springer},
  year = {2007},
  series = {Undergraduate Texts in Mathematics},
  isbn = {978-0-387-35651-8},
  doi = {10.1007/978-0-387-35651-8_4},
  url = {https://doi.org/10.1007/978-0-387-35651-8_4}
}
