gibbons-2009-the:
  type: article
  title: The essence of the Iterator pattern
  author:
  - Gibbons, Jeremy
  - name: S. Oliveira
    given-name: Bruno C.
    prefix: d.
  date: 2009-07
  page-range: 377-402
  serial-number:
    doi: 10.1017/s0956796809007291
  parent:
    type: periodical
    title: Journal of Functional Programming
    publisher: Cambridge University Press (CUP)
    issue: 3–4
    volume: 19