@article{Willett96,
  title = {Molecular diversity techniques for chemical databases},
  author = {Peter Willett 0002},
  year = {1996},
  url = {http://informationr.net/ir/2-3/paper19.html},
  researchr = {https://researchr.org/publication/Willett96},
  cites = {0},
  citedby = {0},
  journal = {Inf. Res.},
  volume = {2},
  number = {3},
}