@article{proyo,
  title = "What You Needa Know About Yoneda: Profunctor Optics and the Yoneda Lemma",
  author = "Guillaume Boisseau and Jeremy Gibbons",
  year = "2018",
  journal = "PACMPL",
  month = "September",
  note = "Functional Pearl",
  number = "ICFP",
  url = "http://www.cs.ox.ac.uk/jeremy.gibbons/publications/proyo.pdf",
  volume = "2",
  doi = "10.1145/3236779",
}