@entry{sto-fig-iwa-22-aa-junk,
  author = {J Stolfi and LH de Figueiredo and R van Iwaarden...},
  title = {Affine arithmetic},
  journal = {Self-Validated ...,},
  year = 1997,
  url = {{\url{https://www.ic.unicamp.br/~stolfi/EXPORT/projects/affine-arith/Welcome.html}}},
  quotes = {... Affine arithmetic is somewhat similar to Hansen's generalized ... Affine arithmetic may also be compared to the ellipsoid ... In general, the internal approximation errors of affine arithmetic ...}
}