@article{Hyland99,
  title = {Variations on Realizability},
  author = {Martin Hyland},
  year = {1999},
  url = {http://www.elsevier.com/gej-ng/31/29/23/92/27/show/Products/notes/index.htt#013},
  researchr = {https://researchr.org/publication/Hyland99},
  cites = {0},
  citedby = {0},
  journal = {Electronic Notes in Theoretical Computer Science},
  volume = {23},
  number = {1},
  pages = {166-188},
}